diff --git a/packages/uni-i18n/dist/uni-i18n.cjs.js b/packages/uni-i18n/dist/uni-i18n.cjs.js
index d2fd405df6ded854d3f433715cb339fccf5f5656..5e7e69eff833211662038cbb3a0f942dce6dd2d7 100644
--- a/packages/uni-i18n/dist/uni-i18n.cjs.js
+++ b/packages/uni-i18n/dist/uni-i18n.cjs.js
@@ -1,19 +1,21 @@
-'use strict';
-
-Object.defineProperty(exports, '__esModule', { value: true });
-
+'use strict';
+
+Object.defineProperty(exports, '__esModule', { value: true });
+
+const isArray = Array.isArray;
 const isObject = (val) => val !== null && typeof val === 'object';
+const defaultDelimiters = ['{', '}'];
 class BaseFormatter {
     constructor() {
         this._caches = Object.create(null);
     }
-    interpolate(message, values) {
+    interpolate(message, values, delimiters = defaultDelimiters) {
         if (!values) {
             return [message];
         }
         let tokens = this._caches[message];
         if (!tokens) {
-            tokens = parse(message);
+            tokens = parse(message, delimiters);
             this._caches[message] = tokens;
         }
         return compile(tokens, values);
@@ -21,24 +23,24 @@ class BaseFormatter {
 }
 const RE_TOKEN_LIST_VALUE = /^(?:\d)+/;
 const RE_TOKEN_NAMED_VALUE = /^(?:\w)+/;
-function parse(format) {
+function parse(format, [startDelimiter, endDelimiter]) {
     const tokens = [];
     let position = 0;
     let text = '';
     while (position < format.length) {
         let char = format[position++];
-        if (char === '{') {
+        if (char === startDelimiter) {
             if (text) {
                 tokens.push({ type: 'text', value: text });
             }
             text = '';
             let sub = '';
             char = format[position++];
-            while (char !== undefined && char !== '}') {
+            while (char !== undefined && char !== endDelimiter) {
                 sub += char;
                 char = format[position++];
             }
-            const isClosed = char === '}';
+            const isClosed = char === endDelimiter;
             const type = RE_TOKEN_LIST_VALUE.test(sub)
                 ? 'list'
                 : isClosed && RE_TOKEN_NAMED_VALUE.test(sub)
@@ -46,12 +48,12 @@ function parse(format) {
                     : 'unknown';
             tokens.push({ value: sub, type });
         }
-        else if (char === '%') {
-            // when found rails i18n syntax, skip text capture
-            if (format[position] !== '{') {
-                text += char;
-            }
-        }
+        //  else if (char === '%') {
+        //   // when found rails i18n syntax, skip text capture
+        //   if (format[position] !== '{') {
+        //     text += char
+        //   }
+        // }
         else {
             text += char;
         }
@@ -62,7 +64,7 @@ function parse(format) {
 function compile(tokens, values) {
     const compiled = [];
     let index = 0;
-    const mode = Array.isArray(values)
+    const mode = isArray(values)
         ? 'list'
         : isObject(values)
             ? 'named'
@@ -98,8 +100,8 @@ function compile(tokens, values) {
         index++;
     }
     return compiled;
-}
-
+}
+
 const LOCALE_ZH_HANS = 'zh-Hans';
 const LOCALE_ZH_HANT = 'zh-Hant';
 const LOCALE_EN = 'en';
@@ -119,7 +121,7 @@ function normalizeLocale(locale, messages) {
         return;
     }
     locale = locale.trim().replace(/_/g, '-');
-    if (messages[locale]) {
+    if (messages && messages[locale]) {
         return locale;
     }
     locale = locale.toLowerCase();
@@ -152,7 +154,7 @@ class I18n {
         }
         this.formater = formater || defaultFormatter;
         this.messages = messages || {};
-        this.setLocale(locale);
+        this.setLocale(locale || LOCALE_EN);
         if (watcher) {
             this.watchLocale(watcher);
         }
@@ -165,9 +167,12 @@ class I18n {
             this.messages[this.locale] = {};
         }
         this.message = this.messages[this.locale];
-        this.watchers.forEach((watcher) => {
-            watcher(this.locale, oldLocale);
-        });
+        // 仅发生变化时，通知
+        if (oldLocale !== this.locale) {
+            this.watchers.forEach((watcher) => {
+                watcher(this.locale, oldLocale);
+            });
+        }
     }
     getLocale() {
         return this.locale;
@@ -178,14 +183,27 @@ class I18n {
             this.watchers.splice(index, 1);
         };
     }
-    add(locale, message) {
-        if (this.messages[locale]) {
-            Object.assign(this.messages[locale], message);
+    add(locale, message, override = true) {
+        const curMessages = this.messages[locale];
+        if (curMessages) {
+            if (override) {
+                Object.assign(curMessages, message);
+            }
+            else {
+                Object.keys(message).forEach((key) => {
+                    if (!hasOwn(curMessages, key)) {
+                        curMessages[key] = message[key];
+                    }
+                });
+            }
         }
         else {
             this.messages[locale] = message;
         }
     }
+    f(message, values, delimiters) {
+        return this.formater.interpolate(message, values, delimiters).join('');
+    }
     t(key, locale, values) {
         let message = this.message;
         if (typeof locale === 'string') {
@@ -201,39 +219,34 @@ class I18n {
         }
         return this.formater.interpolate(message[key], values).join('');
     }
-}
-
+}
+
 const ignoreVueI18n = true;
-function initLocaleWatcher(appVm, i18n) {
-    if (appVm.$i18n) {
-        const vm = appVm.$i18n.vm ? appVm.$i18n.vm : appVm;
-        vm.$watch(appVm.$i18n.vm ? 'locale' : () => appVm.$i18n.locale, (newLocale) => {
-            i18n.setLocale(newLocale);
-        }, {
-            immediate: true,
-        });
-    }
+function watchAppLocale(appVm, i18n) {
+    appVm.$watch(() => appVm.$locale, (newLocale) => {
+        i18n.setLocale(newLocale);
+    });
 }
-// function getDefaultLocale() {
-//   if (typeof navigator !== 'undefined') {
-//     return (navigator as any).userLanguage || navigator.language
-//   }
-//   if (typeof plus !== 'undefined') {
-//     // TODO 待调整为最新的获取语言代码
-//     return plus.os.language
-//   }
-//   return uni.getSystemInfoSync().language
-// }
-function initVueI18n(locale = LOCALE_EN, messages = {}, fallbackLocale = LOCALE_EN, watcher) {
+function initVueI18n(locale, messages = {}, fallbackLocale, watcher) {
     // 兼容旧版本入参
     if (typeof locale !== 'string') {
-        [locale, messages] = [messages, locale];
+        [locale, messages] = [
+            messages,
+            locale,
+        ];
     }
     if (typeof locale !== 'string') {
-        locale = fallbackLocale;
+        locale =
+            (typeof uni !== 'undefined' && uni.getLocale && uni.getLocale()) ||
+                LOCALE_EN;
+    }
+    if (typeof fallbackLocale !== 'string') {
+        fallbackLocale =
+            (typeof __uniConfig !== 'undefined' && __uniConfig.fallbackLocale) ||
+                LOCALE_EN;
     }
     const i18n = new I18n({
-        locale: locale || fallbackLocale,
+        locale,
         fallbackLocale,
         messages,
         watcher,
@@ -248,17 +261,19 @@ function initVueI18n(locale = LOCALE_EN, messages = {}, fallbackLocale = LOCALE_
         }
         else {
             const appVm = getApp().$vm;
+            watchAppLocale(appVm, i18n);
             if (!appVm.$t || !appVm.$i18n || ignoreVueI18n) {
                 // if (!locale) {
                 //   i18n.setLocale(getDefaultLocale())
                 // }
                 /* eslint-disable no-func-assign */
                 t = function (key, values) {
+                    // 触发响应式
+                    appVm.$locale;
                     return i18n.t(key, values);
                 };
             }
             else {
-                initLocaleWatcher(appVm, i18n);
                 /* eslint-disable no-func-assign */
                 t = function (key, values) {
                     const $i18n = appVm.$i18n;
@@ -277,11 +292,17 @@ function initVueI18n(locale = LOCALE_EN, messages = {}, fallbackLocale = LOCALE_
     };
     return {
         i18n,
+        f(message, values, delimiters) {
+            return i18n.f(message, values, delimiters);
+        },
         t(key, values) {
             return t(key, values);
         },
-        add(locale, message) {
-            return i18n.add(locale, message);
+        add(locale, message, override = true) {
+            return i18n.add(locale, message, override);
+        },
+        watch(fn) {
+            return i18n.watchLocale(fn);
         },
         getLocale() {
             return i18n.getLocale();
@@ -290,12 +311,126 @@ function initVueI18n(locale = LOCALE_EN, messages = {}, fallbackLocale = LOCALE_
             return i18n.setLocale(newLocale);
         },
     };
+}
+
+const isString = (val) => typeof val === 'string';
+let formater;
+function hasI18nJson(jsonObj, delimiters) {
+    if (!formater) {
+        formater = new BaseFormatter();
+    }
+    return walkJsonObj(jsonObj, (jsonObj, key) => {
+        const value = jsonObj[key];
+        if (isString(value)) {
+            if (isI18nStr(value, delimiters)) {
+                return true;
+            }
+        }
+        else {
+            return hasI18nJson(value, delimiters);
+        }
+    });
 }
-
-exports.I18n = I18n;
-exports.LOCALE_EN = LOCALE_EN;
-exports.LOCALE_ES = LOCALE_ES;
-exports.LOCALE_FR = LOCALE_FR;
-exports.LOCALE_ZH_HANS = LOCALE_ZH_HANS;
-exports.LOCALE_ZH_HANT = LOCALE_ZH_HANT;
-exports.initVueI18n = initVueI18n;
+function parseI18nJson(jsonObj, values, delimiters) {
+    if (!formater) {
+        formater = new BaseFormatter();
+    }
+    walkJsonObj(jsonObj, (jsonObj, key) => {
+        const value = jsonObj[key];
+        if (isString(value)) {
+            if (isI18nStr(value, delimiters)) {
+                jsonObj[key] = compileStr(value, values, delimiters);
+            }
+        }
+        else {
+            parseI18nJson(value, values, delimiters);
+        }
+    });
+    return jsonObj;
+}
+function compileI18nJsonStr(jsonStr, { locale, locales, delimiters, }) {
+    if (!isI18nStr(jsonStr, delimiters)) {
+        return jsonStr;
+    }
+    if (!formater) {
+        formater = new BaseFormatter();
+    }
+    const localeValues = [];
+    Object.keys(locales).forEach((name) => {
+        if (name !== locale) {
+            localeValues.push({
+                locale: name,
+                values: locales[name],
+            });
+        }
+    });
+    localeValues.unshift({ locale, values: locales[locale] });
+    try {
+        return JSON.stringify(compileJsonObj(JSON.parse(jsonStr), localeValues, delimiters), null, 2);
+    }
+    catch (e) { }
+    return jsonStr;
+}
+function isI18nStr(value, delimiters) {
+    return value.indexOf(delimiters[0]) > -1;
+}
+function compileStr(value, values, delimiters) {
+    return formater.interpolate(value, values, delimiters).join('');
+}
+function compileValue(jsonObj, key, localeValues, delimiters) {
+    const value = jsonObj[key];
+    if (isString(value)) {
+        // 存在国际化
+        if (isI18nStr(value, delimiters)) {
+            jsonObj[key] = compileStr(value, localeValues[0].values, delimiters);
+            if (localeValues.length > 1) {
+                // 格式化国际化语言
+                const valueLocales = (jsonObj[key + 'Locales'] = {});
+                localeValues.forEach((localValue) => {
+                    valueLocales[localValue.locale] = compileStr(value, localValue.values, delimiters);
+                });
+            }
+        }
+    }
+    else {
+        compileJsonObj(value, localeValues, delimiters);
+    }
+}
+function compileJsonObj(jsonObj, localeValues, delimiters) {
+    walkJsonObj(jsonObj, (jsonObj, key) => {
+        compileValue(jsonObj, key, localeValues, delimiters);
+    });
+    return jsonObj;
+}
+function walkJsonObj(jsonObj, walk) {
+    if (isArray(jsonObj)) {
+        for (let i = 0; i < jsonObj.length; i++) {
+            if (walk(jsonObj, i)) {
+                return true;
+            }
+        }
+    }
+    else if (isObject(jsonObj)) {
+        for (const key in jsonObj) {
+            if (walk(jsonObj, key)) {
+                return true;
+            }
+        }
+    }
+    return false;
+}
+
+exports.Formatter = BaseFormatter;
+exports.I18n = I18n;
+exports.LOCALE_EN = LOCALE_EN;
+exports.LOCALE_ES = LOCALE_ES;
+exports.LOCALE_FR = LOCALE_FR;
+exports.LOCALE_ZH_HANS = LOCALE_ZH_HANS;
+exports.LOCALE_ZH_HANT = LOCALE_ZH_HANT;
+exports.compileI18nJsonStr = compileI18nJsonStr;
+exports.hasI18nJson = hasI18nJson;
+exports.initVueI18n = initVueI18n;
+exports.isI18nStr = isI18nStr;
+exports.isString = isString;
+exports.normalizeLocale = normalizeLocale;
+exports.parseI18nJson = parseI18nJson;
diff --git a/packages/uni-i18n/dist/uni-i18n.d.ts b/packages/uni-i18n/dist/uni-i18n.d.ts
index b2152ac27c86ce1dc4bb1994ca678882f265e549..85c675ab66acb230bcbe5ce71de840c7921a2780 100644
--- a/packages/uni-i18n/dist/uni-i18n.d.ts
+++ b/packages/uni-i18n/dist/uni-i18n.d.ts
@@ -1,9 +1,25 @@
 export declare type BuiltInLocale = typeof LOCALE_ZH_HANS | typeof LOCALE_ZH_HANT | typeof LOCALE_EN | typeof LOCALE_FR | typeof LOCALE_ES;
 
-export declare interface Formatter {
-    interpolate: (message: string, values?: Record<string, unknown> | Array<unknown>) => Array<unknown>;
+export declare function compileI18nJsonStr(jsonStr: string, { locale, locales, delimiters, }: {
+    locale: string;
+    locales: Record<string, Record<string, string>>;
+    delimiters: [string, string];
+}): string;
+
+export declare class Formatter {
+    _caches: {
+        [key: string]: Array<Token>;
+    };
+    constructor();
+    interpolate(message: string, values?: Record<string, unknown> | Array<unknown>, delimiters?: [string, string]): Array<unknown>;
+}
+
+declare interface Formatter_2 {
+    interpolate: (message: string, values?: Record<string, unknown> | Array<unknown>, delimiters?: [string, string]) => Array<unknown>;
 }
 
+export declare function hasI18nJson(jsonObj: unknown, delimiters: [string, string]): boolean;
+
 export declare class I18n {
     private locale;
     private fallbackLocale;
@@ -13,29 +29,36 @@ export declare class I18n {
     private formater;
     constructor({ locale, fallbackLocale, messages, watcher, formater, }: I18nOptions);
     setLocale(locale: string): void;
-    getLocale(): BuiltInLocale;
+    getLocale(): string;
     watchLocale(fn: LocaleWatcher): () => void;
-    add(locale: BuiltInLocale, message: Record<string, string>): void;
+    add(locale: BuiltInLocale, message: Record<string, string>, override?: boolean): void;
+    f(message: string, values?: Record<string, unknown> | Array<unknown>, delimiters?: [string, string]): string;
     t(key: string, values?: Record<string, unknown> | Array<unknown> | BuiltInLocale): string;
     t(key: string, locale?: BuiltInLocale, values?: Record<string, unknown> | Array<unknown>): string;
 }
 
 export declare interface I18nOptions {
-    locale: BuiltInLocale;
-    fallbackLocale?: BuiltInLocale;
+    locale: string;
+    fallbackLocale?: string;
     messages?: LocaleMessages;
-    formater?: Formatter;
+    formater?: Formatter_2;
     watcher?: LocaleWatcher;
 }
 
-export declare function initVueI18n(locale?: BuiltInLocale, messages?: LocaleMessages, fallbackLocale?: BuiltInLocale, watcher?: (locale: BuiltInLocale) => void): {
+export declare function initVueI18n(locale?: string, messages?: LocaleMessages, fallbackLocale?: string, watcher?: (locale: string) => void): {
     i18n: I18n;
+    f(message: string, values?: Record<string, unknown> | unknown[] | undefined, delimiters?: [string, string] | undefined): string;
     t(key: string, values?: Record<string, unknown> | unknown[] | undefined): string;
-    add(locale: BuiltInLocale, message: Record<string, string>): void;
-    getLocale(): BuiltInLocale;
-    setLocale(newLocale: BuiltInLocale): void;
+    add(locale: BuiltInLocale, message: Record<string, string>, override?: boolean): void;
+    watch(fn: LocaleWatcher): () => void;
+    getLocale(): string;
+    setLocale(newLocale: string): void;
 };
 
+export declare function isI18nStr(value: string, delimiters: [string, string]): boolean;
+
+export declare const isString: (val: unknown) => val is string;
+
 export declare const LOCALE_EN = "en";
 
 export declare const LOCALE_ES = "es";
@@ -46,10 +69,17 @@ export declare const LOCALE_ZH_HANS = "zh-Hans";
 
 export declare const LOCALE_ZH_HANT = "zh-Hant";
 
-export declare type LocaleMessages = {
-    [name in BuiltInLocale]?: Record<string, string>;
-};
+export declare type LocaleMessages = Record<string, Record<string, string>>;
+
+export declare type LocaleWatcher = (newLocale: string, oldLocale: string) => void;
+
+export declare function normalizeLocale(locale: string, messages?: LocaleMessages): BuiltInLocale | undefined;
 
-export declare type LocaleWatcher = (newLocale: BuiltInLocale, oldLocale: BuiltInLocale) => void;
+export declare function parseI18nJson(jsonObj: unknown, values: Record<string, string>, delimiters: [string, string]): unknown;
+
+declare type Token = {
+    type: 'text' | 'named' | 'list' | 'unknown';
+    value: string;
+};
 
 export { }
diff --git a/packages/uni-i18n/dist/uni-i18n.esm.js b/packages/uni-i18n/dist/uni-i18n.es.js
similarity index 53%
rename from packages/uni-i18n/dist/uni-i18n.esm.js
rename to packages/uni-i18n/dist/uni-i18n.es.js
index 36c2d5a96c82d0cefe27c3aeb52e272319b23631..d4d1d6331893ba7849f54fc18d7afb11fadd6b68 100644
--- a/packages/uni-i18n/dist/uni-i18n.esm.js
+++ b/packages/uni-i18n/dist/uni-i18n.es.js
@@ -1,15 +1,17 @@
+const isArray = Array.isArray;
 const isObject = (val) => val !== null && typeof val === 'object';
+const defaultDelimiters = ['{', '}'];
 class BaseFormatter {
     constructor() {
         this._caches = Object.create(null);
     }
-    interpolate(message, values) {
+    interpolate(message, values, delimiters = defaultDelimiters) {
         if (!values) {
             return [message];
         }
         let tokens = this._caches[message];
         if (!tokens) {
-            tokens = parse(message);
+            tokens = parse(message, delimiters);
             this._caches[message] = tokens;
         }
         return compile(tokens, values);
@@ -17,24 +19,24 @@ class BaseFormatter {
 }
 const RE_TOKEN_LIST_VALUE = /^(?:\d)+/;
 const RE_TOKEN_NAMED_VALUE = /^(?:\w)+/;
-function parse(format) {
+function parse(format, [startDelimiter, endDelimiter]) {
     const tokens = [];
     let position = 0;
     let text = '';
     while (position < format.length) {
         let char = format[position++];
-        if (char === '{') {
+        if (char === startDelimiter) {
             if (text) {
                 tokens.push({ type: 'text', value: text });
             }
             text = '';
             let sub = '';
             char = format[position++];
-            while (char !== undefined && char !== '}') {
+            while (char !== undefined && char !== endDelimiter) {
                 sub += char;
                 char = format[position++];
             }
-            const isClosed = char === '}';
+            const isClosed = char === endDelimiter;
             const type = RE_TOKEN_LIST_VALUE.test(sub)
                 ? 'list'
                 : isClosed && RE_TOKEN_NAMED_VALUE.test(sub)
@@ -42,12 +44,12 @@ function parse(format) {
                     : 'unknown';
             tokens.push({ value: sub, type });
         }
-        else if (char === '%') {
-            // when found rails i18n syntax, skip text capture
-            if (format[position] !== '{') {
-                text += char;
-            }
-        }
+        //  else if (char === '%') {
+        //   // when found rails i18n syntax, skip text capture
+        //   if (format[position] !== '{') {
+        //     text += char
+        //   }
+        // }
         else {
             text += char;
         }
@@ -58,7 +60,7 @@ function parse(format) {
 function compile(tokens, values) {
     const compiled = [];
     let index = 0;
-    const mode = Array.isArray(values)
+    const mode = isArray(values)
         ? 'list'
         : isObject(values)
             ? 'named'
@@ -115,7 +117,7 @@ function normalizeLocale(locale, messages) {
         return;
     }
     locale = locale.trim().replace(/_/g, '-');
-    if (messages[locale]) {
+    if (messages && messages[locale]) {
         return locale;
     }
     locale = locale.toLowerCase();
@@ -148,7 +150,7 @@ class I18n {
         }
         this.formater = formater || defaultFormatter;
         this.messages = messages || {};
-        this.setLocale(locale);
+        this.setLocale(locale || LOCALE_EN);
         if (watcher) {
             this.watchLocale(watcher);
         }
@@ -161,9 +163,12 @@ class I18n {
             this.messages[this.locale] = {};
         }
         this.message = this.messages[this.locale];
-        this.watchers.forEach((watcher) => {
-            watcher(this.locale, oldLocale);
-        });
+        // 仅发生变化时，通知
+        if (oldLocale !== this.locale) {
+            this.watchers.forEach((watcher) => {
+                watcher(this.locale, oldLocale);
+            });
+        }
     }
     getLocale() {
         return this.locale;
@@ -174,14 +179,27 @@ class I18n {
             this.watchers.splice(index, 1);
         };
     }
-    add(locale, message) {
-        if (this.messages[locale]) {
-            Object.assign(this.messages[locale], message);
+    add(locale, message, override = true) {
+        const curMessages = this.messages[locale];
+        if (curMessages) {
+            if (override) {
+                Object.assign(curMessages, message);
+            }
+            else {
+                Object.keys(message).forEach((key) => {
+                    if (!hasOwn(curMessages, key)) {
+                        curMessages[key] = message[key];
+                    }
+                });
+            }
         }
         else {
             this.messages[locale] = message;
         }
     }
+    f(message, values, delimiters) {
+        return this.formater.interpolate(message, values, delimiters).join('');
+    }
     t(key, locale, values) {
         let message = this.message;
         if (typeof locale === 'string') {
@@ -200,36 +218,31 @@ class I18n {
 }
 
 const ignoreVueI18n = true;
-function initLocaleWatcher(appVm, i18n) {
-    if (appVm.$i18n) {
-        const vm = appVm.$i18n.vm ? appVm.$i18n.vm : appVm;
-        vm.$watch(appVm.$i18n.vm ? 'locale' : () => appVm.$i18n.locale, (newLocale) => {
-            i18n.setLocale(newLocale);
-        }, {
-            immediate: true,
-        });
-    }
+function watchAppLocale(appVm, i18n) {
+    appVm.$watch(() => appVm.$locale, (newLocale) => {
+        i18n.setLocale(newLocale);
+    });
 }
-// function getDefaultLocale() {
-//   if (typeof navigator !== 'undefined') {
-//     return (navigator as any).userLanguage || navigator.language
-//   }
-//   if (typeof plus !== 'undefined') {
-//     // TODO 待调整为最新的获取语言代码
-//     return plus.os.language
-//   }
-//   return uni.getSystemInfoSync().language
-// }
-function initVueI18n(locale = LOCALE_EN, messages = {}, fallbackLocale = LOCALE_EN, watcher) {
+function initVueI18n(locale, messages = {}, fallbackLocale, watcher) {
     // 兼容旧版本入参
     if (typeof locale !== 'string') {
-        [locale, messages] = [messages, locale];
+        [locale, messages] = [
+            messages,
+            locale,
+        ];
     }
     if (typeof locale !== 'string') {
-        locale = fallbackLocale;
+        locale =
+            (typeof uni !== 'undefined' && uni.getLocale && uni.getLocale()) ||
+                LOCALE_EN;
+    }
+    if (typeof fallbackLocale !== 'string') {
+        fallbackLocale =
+            (typeof __uniConfig !== 'undefined' && __uniConfig.fallbackLocale) ||
+                LOCALE_EN;
     }
     const i18n = new I18n({
-        locale: locale || fallbackLocale,
+        locale,
         fallbackLocale,
         messages,
         watcher,
@@ -244,17 +257,19 @@ function initVueI18n(locale = LOCALE_EN, messages = {}, fallbackLocale = LOCALE_
         }
         else {
             const appVm = getApp().$vm;
+            watchAppLocale(appVm, i18n);
             if (!appVm.$t || !appVm.$i18n || ignoreVueI18n) {
                 // if (!locale) {
                 //   i18n.setLocale(getDefaultLocale())
                 // }
                 /* eslint-disable no-func-assign */
                 t = function (key, values) {
+                    // 触发响应式
+                    appVm.$locale;
                     return i18n.t(key, values);
                 };
             }
             else {
-                initLocaleWatcher(appVm, i18n);
                 /* eslint-disable no-func-assign */
                 t = function (key, values) {
                     const $i18n = appVm.$i18n;
@@ -273,11 +288,17 @@ function initVueI18n(locale = LOCALE_EN, messages = {}, fallbackLocale = LOCALE_
     };
     return {
         i18n,
+        f(message, values, delimiters) {
+            return i18n.f(message, values, delimiters);
+        },
         t(key, values) {
             return t(key, values);
         },
-        add(locale, message) {
-            return i18n.add(locale, message);
+        add(locale, message, override = true) {
+            return i18n.add(locale, message, override);
+        },
+        watch(fn) {
+            return i18n.watchLocale(fn);
         },
         getLocale() {
             return i18n.getLocale();
@@ -288,4 +309,111 @@ function initVueI18n(locale = LOCALE_EN, messages = {}, fallbackLocale = LOCALE_
     };
 }
 
-export { I18n, LOCALE_EN, LOCALE_ES, LOCALE_FR, LOCALE_ZH_HANS, LOCALE_ZH_HANT, initVueI18n };
+const isString = (val) => typeof val === 'string';
+let formater;
+function hasI18nJson(jsonObj, delimiters) {
+    if (!formater) {
+        formater = new BaseFormatter();
+    }
+    return walkJsonObj(jsonObj, (jsonObj, key) => {
+        const value = jsonObj[key];
+        if (isString(value)) {
+            if (isI18nStr(value, delimiters)) {
+                return true;
+            }
+        }
+        else {
+            return hasI18nJson(value, delimiters);
+        }
+    });
+}
+function parseI18nJson(jsonObj, values, delimiters) {
+    if (!formater) {
+        formater = new BaseFormatter();
+    }
+    walkJsonObj(jsonObj, (jsonObj, key) => {
+        const value = jsonObj[key];
+        if (isString(value)) {
+            if (isI18nStr(value, delimiters)) {
+                jsonObj[key] = compileStr(value, values, delimiters);
+            }
+        }
+        else {
+            parseI18nJson(value, values, delimiters);
+        }
+    });
+    return jsonObj;
+}
+function compileI18nJsonStr(jsonStr, { locale, locales, delimiters, }) {
+    if (!isI18nStr(jsonStr, delimiters)) {
+        return jsonStr;
+    }
+    if (!formater) {
+        formater = new BaseFormatter();
+    }
+    const localeValues = [];
+    Object.keys(locales).forEach((name) => {
+        if (name !== locale) {
+            localeValues.push({
+                locale: name,
+                values: locales[name],
+            });
+        }
+    });
+    localeValues.unshift({ locale, values: locales[locale] });
+    try {
+        return JSON.stringify(compileJsonObj(JSON.parse(jsonStr), localeValues, delimiters), null, 2);
+    }
+    catch (e) { }
+    return jsonStr;
+}
+function isI18nStr(value, delimiters) {
+    return value.indexOf(delimiters[0]) > -1;
+}
+function compileStr(value, values, delimiters) {
+    return formater.interpolate(value, values, delimiters).join('');
+}
+function compileValue(jsonObj, key, localeValues, delimiters) {
+    const value = jsonObj[key];
+    if (isString(value)) {
+        // 存在国际化
+        if (isI18nStr(value, delimiters)) {
+            jsonObj[key] = compileStr(value, localeValues[0].values, delimiters);
+            if (localeValues.length > 1) {
+                // 格式化国际化语言
+                const valueLocales = (jsonObj[key + 'Locales'] = {});
+                localeValues.forEach((localValue) => {
+                    valueLocales[localValue.locale] = compileStr(value, localValue.values, delimiters);
+                });
+            }
+        }
+    }
+    else {
+        compileJsonObj(value, localeValues, delimiters);
+    }
+}
+function compileJsonObj(jsonObj, localeValues, delimiters) {
+    walkJsonObj(jsonObj, (jsonObj, key) => {
+        compileValue(jsonObj, key, localeValues, delimiters);
+    });
+    return jsonObj;
+}
+function walkJsonObj(jsonObj, walk) {
+    if (isArray(jsonObj)) {
+        for (let i = 0; i < jsonObj.length; i++) {
+            if (walk(jsonObj, i)) {
+                return true;
+            }
+        }
+    }
+    else if (isObject(jsonObj)) {
+        for (const key in jsonObj) {
+            if (walk(jsonObj, key)) {
+                return true;
+            }
+        }
+    }
+    return false;
+}
+
+export { BaseFormatter as Formatter, I18n, LOCALE_EN, LOCALE_ES, LOCALE_FR, LOCALE_ZH_HANS, LOCALE_ZH_HANT, compileI18nJsonStr, hasI18nJson, initVueI18n, isI18nStr, isString, normalizeLocale, parseI18nJson };
diff --git a/packages/uni-i18n/package.json b/packages/uni-i18n/package.json
index 3e3dac291e831f99677ca4f48f75e9ca82098045..706c8765043365181a0ac007e98ff9b8300bb46a 100644
--- a/packages/uni-i18n/package.json
+++ b/packages/uni-i18n/package.json
@@ -2,9 +2,9 @@
   "name": "@dcloudio/uni-i18n",
   "version": "2.0.0-31920210709003",
   "description": "@dcloudio/uni-i18n",
-  "main": "dist/uni-i18n.cjs.js",
-  "module": "dist/uni-i18n.esm.js",
-  "types": "dist/uni-i18n.d.ts",
+  "main": "./dist/uni-i18n.cjs.js",
+  "module": "./dist/uni-i18n.es.js",
+  "types": "./dist/uni-i18n.d.ts",
   "files": [
     "dist"
   ],
diff --git a/packages/uni-mp-alipay/dist/uni.api.esm.js b/packages/uni-mp-alipay/dist/uni.api.esm.js
index cbee7b1c7791b415f9731daab3a502b5f3a2b751..b319981ff37174b1434b8eb6a3d0c24af60e0397 100644
--- a/packages/uni-mp-alipay/dist/uni.api.esm.js
+++ b/packages/uni-mp-alipay/dist/uni.api.esm.js
@@ -583,7 +583,7 @@ const $emit = defineSyncApi(API_EMIT, (name, ...args) => {
     emitter.emit(name, ...args);
 }, EmitProtocol);
 
-const SYNC_API_RE = /^\$|sendNativeEvent|restoreGlobal|getCurrentSubNVue|getMenuButtonBoundingClientRect|^report|interceptors|Interceptor$|getSubNVueById|requireNativePlugin|upx2px|hideKeyboard|canIUse|^create|Sync$|Manager$|base64ToArrayBuffer|arrayBufferToBase64/;
+const SYNC_API_RE = /^\$|getLocale|setLocale|sendNativeEvent|restoreGlobal|getCurrentSubNVue|getMenuButtonBoundingClientRect|^report|interceptors|Interceptor$|getSubNVueById|requireNativePlugin|upx2px|hideKeyboard|canIUse|^create|Sync$|Manager$|base64ToArrayBuffer|arrayBufferToBase64/;
 const CONTEXT_API_RE = /^create|Manager$/;
 // Context例外情况
 const CONTEXT_API_RE_EXC = ['createBLEConnection'];
@@ -727,6 +727,30 @@ function initWrapper(protocols) {
     };
 }
 
+const getLocale = () => {
+    // 优先使用 $locale
+    const app = getApp({ allowDefault: true });
+    if (app && app.$vm) {
+        return app.$vm.$locale;
+    }
+    return uni.getSystemInfoSync().language || 'zh-Hans';
+};
+const setLocale = (locale) => {
+    const oldLocale = getApp().$vm.$locale;
+    if (oldLocale !== locale) {
+        getApp().$vm.$locale = locale;
+        onLocaleChangeCallbacks.forEach((fn) => fn({ locale }));
+        return true;
+    }
+    return false;
+};
+const onLocaleChangeCallbacks = [];
+const onLocaleChange = (fn) => {
+    if (onLocaleChangeCallbacks.indexOf(fn) === -1) {
+        onLocaleChangeCallbacks.push(fn);
+    }
+};
+
 const baseApis = {
     $on,
     $off,
@@ -736,6 +760,9 @@ const baseApis = {
     addInterceptor,
     removeInterceptor,
     onAppLaunch,
+    getLocale,
+    setLocale,
+    onLocaleChange,
 };
 function initUni(api, protocols) {
     const wrapper = initWrapper(protocols);
@@ -929,7 +956,7 @@ function handleSystemInfo(fromRes, toRes) {
     }
     toRes.platform = platform;
 }
-function returnValue(methodName, res) {
+function returnValue(methodName, res = {}) {
     // 通用 returnValue 解析
     if (res.error || res.errorMessage) {
         res.errMsg = `${methodName}:fail ${res.errorMessage || res.error}`;
@@ -1107,8 +1134,18 @@ const connectSocket = {
     // TODO 有没有返回值还需要测试下
 };
 const chooseImage = {
-    returnValue: {
-        apFilePaths: 'tempFilePaths',
+    returnValue(result) {
+        var _a, _b;
+        const hasTempFilePaths = hasOwn(result, 'tempFilePaths') && result.tempFilePaths;
+        if (hasOwn(result, 'apFilePaths') && !hasTempFilePaths) {
+            result.tempFilePaths = [];
+            (_a = result.apFilePaths) === null || _a === void 0 ? void 0 : _a.forEach((apFilePath) => { var _a; return (_a = result.tempFilePaths) === null || _a === void 0 ? void 0 : _a.push(apFilePath); });
+        }
+        if (!hasOwn(result, 'tempFiles') && hasTempFilePaths) {
+            result.tempFiles = [];
+            (_b = result.tempFilePaths) === null || _b === void 0 ? void 0 : _b.forEach((tempFilePath) => { var _a; return (_a = result.tempFiles) === null || _a === void 0 ? void 0 : _a.push({ path: tempFilePath }); });
+        }
+        return {};
     },
 };
 const previewImage = {
diff --git a/packages/uni-mp-alipay/dist/uni.mp.esm.js b/packages/uni-mp-alipay/dist/uni.mp.esm.js
index a04f9acf31ce9e3a510bc1d0db42757cc7d7fb36..93b8781bc5c7c0daa6060a2ae918a4729603d111 100644
--- a/packages/uni-mp-alipay/dist/uni.mp.esm.js
+++ b/packages/uni-mp-alipay/dist/uni.mp.esm.js
@@ -1,5 +1,5 @@
 import { isPlainObject, isArray, extend, hyphenate, isObject, hasOwn, toNumber, capitalize, isFunction, NOOP, EMPTY_OBJ, camelize } from '@vue/shared';
-import { onUnmounted, injectHook } from 'vue';
+import { onUnmounted, injectHook, ref } from 'vue';
 
 const encode = encodeURIComponent;
 function stringifyQuery(obj, encodeStr = encode) {
@@ -578,6 +578,7 @@ function parseApp(instance, parseAppOptions) {
             instance.$callHook(ON_LAUNCH, extend({ app: this }, options));
         },
     };
+    initLocale(instance);
     const vueOptions = instance.$.type;
     initHooks(appOptions, HOOKS);
     initUnknownHooks(appOptions, vueOptions);
@@ -594,6 +595,17 @@ function initCreateApp(parseAppOptions) {
     return function createApp(vm) {
         return App(parseApp(vm, parseAppOptions));
     };
+}
+function initLocale(appVm) {
+    const locale = ref(uni.getSystemInfoSync().language || 'zh-Hans');
+    Object.defineProperty(appVm, '$locale', {
+        get() {
+            return locale.value;
+        },
+        set(v) {
+            locale.value = v;
+        },
+    });
 }
 
 const PROP_TYPES = [String, Number, Boolean, Object, Array, null];
diff --git a/packages/uni-mp-baidu/dist/uni.api.esm.js b/packages/uni-mp-baidu/dist/uni.api.esm.js
index d60c8db10911e460a176cdefa0cf33a1b63005d3..65a5f130802dc46a77815bb876600cab06d8fa3e 100644
--- a/packages/uni-mp-baidu/dist/uni.api.esm.js
+++ b/packages/uni-mp-baidu/dist/uni.api.esm.js
@@ -583,7 +583,7 @@ const $emit = defineSyncApi(API_EMIT, (name, ...args) => {
     emitter.emit(name, ...args);
 }, EmitProtocol);
 
-const SYNC_API_RE = /^\$|sendNativeEvent|restoreGlobal|getCurrentSubNVue|getMenuButtonBoundingClientRect|^report|interceptors|Interceptor$|getSubNVueById|requireNativePlugin|upx2px|hideKeyboard|canIUse|^create|Sync$|Manager$|base64ToArrayBuffer|arrayBufferToBase64/;
+const SYNC_API_RE = /^\$|getLocale|setLocale|sendNativeEvent|restoreGlobal|getCurrentSubNVue|getMenuButtonBoundingClientRect|^report|interceptors|Interceptor$|getSubNVueById|requireNativePlugin|upx2px|hideKeyboard|canIUse|^create|Sync$|Manager$|base64ToArrayBuffer|arrayBufferToBase64/;
 const CONTEXT_API_RE = /^create|Manager$/;
 // Context例外情况
 const CONTEXT_API_RE_EXC = ['createBLEConnection'];
@@ -727,6 +727,30 @@ function initWrapper(protocols) {
     };
 }
 
+const getLocale = () => {
+    // 优先使用 $locale
+    const app = getApp({ allowDefault: true });
+    if (app && app.$vm) {
+        return app.$vm.$locale;
+    }
+    return uni.getSystemInfoSync().language || 'zh-Hans';
+};
+const setLocale = (locale) => {
+    const oldLocale = getApp().$vm.$locale;
+    if (oldLocale !== locale) {
+        getApp().$vm.$locale = locale;
+        onLocaleChangeCallbacks.forEach((fn) => fn({ locale }));
+        return true;
+    }
+    return false;
+};
+const onLocaleChangeCallbacks = [];
+const onLocaleChange = (fn) => {
+    if (onLocaleChangeCallbacks.indexOf(fn) === -1) {
+        onLocaleChangeCallbacks.push(fn);
+    }
+};
+
 const baseApis = {
     $on,
     $off,
@@ -736,6 +760,9 @@ const baseApis = {
     addInterceptor,
     removeInterceptor,
     onAppLaunch,
+    getLocale,
+    setLocale,
+    onLocaleChange,
 };
 function initUni(api, protocols) {
     const wrapper = initWrapper(protocols);
diff --git a/packages/uni-mp-baidu/dist/uni.mp.esm.js b/packages/uni-mp-baidu/dist/uni.mp.esm.js
index 5b473541558e1131871df23c700e7f614dae98f2..bcaa5f73461c7f7f62e4e01497ee05d857fa609d 100644
--- a/packages/uni-mp-baidu/dist/uni.mp.esm.js
+++ b/packages/uni-mp-baidu/dist/uni.mp.esm.js
@@ -1,5 +1,5 @@
 import { isPlainObject, hasOwn, isArray, extend, hyphenate, isObject, toNumber, isFunction, NOOP, camelize } from '@vue/shared';
-import { onUnmounted, injectHook } from 'vue';
+import { onUnmounted, injectHook, ref } from 'vue';
 
 const encode = encodeURIComponent;
 function stringifyQuery(obj, encodeStr = encode) {
@@ -603,6 +603,7 @@ function parseApp(instance, parseAppOptions) {
             instance.$callHook(ON_LAUNCH, extend({ app: this }, options));
         },
     };
+    initLocale(instance);
     const vueOptions = instance.$.type;
     initHooks(appOptions, HOOKS);
     initUnknownHooks(appOptions, vueOptions);
@@ -619,6 +620,17 @@ function initCreateApp(parseAppOptions) {
     return function createApp(vm) {
         return App(parseApp(vm, parseAppOptions));
     };
+}
+function initLocale(appVm) {
+    const locale = ref(uni.getSystemInfoSync().language || 'zh-Hans');
+    Object.defineProperty(appVm, '$locale', {
+        get() {
+            return locale.value;
+        },
+        set(v) {
+            locale.value = v;
+        },
+    });
 }
 
 const PROP_TYPES = [String, Number, Boolean, Object, Array, null];
@@ -1179,6 +1191,45 @@ var parseAppOptions = /*#__PURE__*/Object.freeze({
     parse: parse$2
 });
 
+/**
+ * 用于延迟调用 setData
+ * 在 setData 真实调用的时机需执行 fixSetDataEnd
+ * @param {*} mpInstance
+ */
+function fixSetDataStart(mpInstance) {
+    const setData = mpInstance.setData;
+    const setDataArgs = [];
+    mpInstance.setData = function () {
+        setDataArgs.push(arguments);
+    };
+    mpInstance.__fixInitData = function () {
+        this.setData = setData;
+        const fn = () => {
+            setDataArgs.forEach((args) => {
+                setData.apply(this, args);
+            });
+        };
+        if (setDataArgs.length) {
+            if (this.groupSetData) {
+                this.groupSetData(fn);
+            }
+            else {
+                fn();
+            }
+        }
+    };
+}
+/**
+ * 恢复真实的 setData 方法
+ * @param {*} mpInstance
+ */
+function fixSetDataEnd(mpInstance) {
+    if (mpInstance.__fixInitData) {
+        mpInstance.__fixInitData();
+        delete mpInstance.__fixInitData;
+    }
+}
+
 function initLifetimes({ mocks, isPage, initRelation, vueOptions, }) {
     return {
         attached() {
@@ -1250,10 +1301,29 @@ function parse$1(componentOptions) {
     // lifetimes:attached --> methods:onShow --> methods:onLoad --> methods:onReady
     // 这里在强制将onShow挪到onLoad之后触发,另外一处修改在page-parser.js
     const oldAttached = lifetimes.attached;
-    lifetimes.attached = function attached() {
+    // 百度小程序基础库 3.260 以上支持页面 onInit 生命周期，提前创建 vm 实例
+    lifetimes.onInit = function onInit(query) {
+        // 百度小程序后续可能移除 pageinstance 属性，为向后兼容进行补充
+        if (!this.pageinstance || !this.pageinstance.setData) {
+            const pages = getCurrentPages();
+            this.pageinstance = pages[pages.length - 1];
+        }
+        // 处理百度小程序 onInit 生命周期调用 setData 无效的问题
+        fixSetDataStart(this);
         oldAttached.call(this);
+        this.pageinstance.$vm = this.$vm;
+        this.$vm.__call_hook('onInit', query);
+    };
+    lifetimes.attached = function attached() {
+        if (!this.$vm) {
+            oldAttached.call(this);
+        }
+        else {
+            initMocks(this.$vm.$, this, mocks);
+            fixSetDataEnd(this);
+        }
         if (isPage(this) && this.$vm) {
-            // 百度 onLoad 在 attached 之前触发
+            // 百度 onLoad 在 attached 之前触发（基础库小于 3.70）
             // 百度 当组件作为页面时 pageinstance 不是原来组件的 instance
             const pageInstance = this.pageinstance;
             pageInstance.$vm = this.$vm;
diff --git a/packages/uni-mp-kuaishou/dist/uni.api.esm.js b/packages/uni-mp-kuaishou/dist/uni.api.esm.js
index a71abe19788af49d6b83156ca0e48259ae6d5bfe..7ad77fc218800258db99e27aa250920f139b2c8a 100644
--- a/packages/uni-mp-kuaishou/dist/uni.api.esm.js
+++ b/packages/uni-mp-kuaishou/dist/uni.api.esm.js
@@ -583,7 +583,7 @@ const $emit = defineSyncApi(API_EMIT, (name, ...args) => {
     emitter.emit(name, ...args);
 }, EmitProtocol);
 
-const SYNC_API_RE = /^\$|sendNativeEvent|restoreGlobal|getCurrentSubNVue|getMenuButtonBoundingClientRect|^report|interceptors|Interceptor$|getSubNVueById|requireNativePlugin|upx2px|hideKeyboard|canIUse|^create|Sync$|Manager$|base64ToArrayBuffer|arrayBufferToBase64/;
+const SYNC_API_RE = /^\$|getLocale|setLocale|sendNativeEvent|restoreGlobal|getCurrentSubNVue|getMenuButtonBoundingClientRect|^report|interceptors|Interceptor$|getSubNVueById|requireNativePlugin|upx2px|hideKeyboard|canIUse|^create|Sync$|Manager$|base64ToArrayBuffer|arrayBufferToBase64/;
 const CONTEXT_API_RE = /^create|Manager$/;
 // Context例外情况
 const CONTEXT_API_RE_EXC = ['createBLEConnection'];
@@ -727,6 +727,30 @@ function initWrapper(protocols) {
     };
 }
 
+const getLocale = () => {
+    // 优先使用 $locale
+    const app = getApp({ allowDefault: true });
+    if (app && app.$vm) {
+        return app.$vm.$locale;
+    }
+    return uni.getSystemInfoSync().language || 'zh-Hans';
+};
+const setLocale = (locale) => {
+    const oldLocale = getApp().$vm.$locale;
+    if (oldLocale !== locale) {
+        getApp().$vm.$locale = locale;
+        onLocaleChangeCallbacks.forEach((fn) => fn({ locale }));
+        return true;
+    }
+    return false;
+};
+const onLocaleChangeCallbacks = [];
+const onLocaleChange = (fn) => {
+    if (onLocaleChangeCallbacks.indexOf(fn) === -1) {
+        onLocaleChangeCallbacks.push(fn);
+    }
+};
+
 const baseApis = {
     $on,
     $off,
@@ -736,6 +760,9 @@ const baseApis = {
     addInterceptor,
     removeInterceptor,
     onAppLaunch,
+    getLocale,
+    setLocale,
+    onLocaleChange,
 };
 function initUni(api, protocols) {
     const wrapper = initWrapper(protocols);
diff --git a/packages/uni-mp-kuaishou/dist/uni.mp.esm.js b/packages/uni-mp-kuaishou/dist/uni.mp.esm.js
index 860f9bf9a464c76be791b18c482d08f5d0116950..87ce3029afc74970e1a4da125b96c42db213e403 100644
--- a/packages/uni-mp-kuaishou/dist/uni.mp.esm.js
+++ b/packages/uni-mp-kuaishou/dist/uni.mp.esm.js
@@ -1,5 +1,5 @@
 import { isPlainObject, hasOwn, isArray, extend, hyphenate, isObject, toNumber, isFunction, NOOP, camelize } from '@vue/shared';
-import { onUnmounted, injectHook } from 'vue';
+import { onUnmounted, injectHook, ref } from 'vue';
 
 const encode = encodeURIComponent;
 function stringifyQuery(obj, encodeStr = encode) {
@@ -603,6 +603,7 @@ function parseApp(instance, parseAppOptions) {
             instance.$callHook(ON_LAUNCH, extend({ app: this }, options));
         },
     };
+    initLocale(instance);
     const vueOptions = instance.$.type;
     initHooks(appOptions, HOOKS);
     initUnknownHooks(appOptions, vueOptions);
@@ -619,6 +620,17 @@ function initCreateApp(parseAppOptions) {
     return function createApp(vm) {
         return App(parseApp(vm, parseAppOptions));
     };
+}
+function initLocale(appVm) {
+    const locale = ref(uni.getSystemInfoSync().language || 'zh-Hans');
+    Object.defineProperty(appVm, '$locale', {
+        get() {
+            return locale.value;
+        },
+        set(v) {
+            locale.value = v;
+        },
+    });
 }
 
 const PROP_TYPES = [String, Number, Boolean, Object, Array, null];
diff --git a/packages/uni-mp-qq/dist/uni.api.esm.js b/packages/uni-mp-qq/dist/uni.api.esm.js
index 6ee33ac8fabbf3bfbc3b7018e0193af230522a1e..9941b76b8dc205554573e3463cee83a4034a4f96 100644
--- a/packages/uni-mp-qq/dist/uni.api.esm.js
+++ b/packages/uni-mp-qq/dist/uni.api.esm.js
@@ -583,7 +583,7 @@ const $emit = defineSyncApi(API_EMIT, (name, ...args) => {
     emitter.emit(name, ...args);
 }, EmitProtocol);
 
-const SYNC_API_RE = /^\$|sendNativeEvent|restoreGlobal|getCurrentSubNVue|getMenuButtonBoundingClientRect|^report|interceptors|Interceptor$|getSubNVueById|requireNativePlugin|upx2px|hideKeyboard|canIUse|^create|Sync$|Manager$|base64ToArrayBuffer|arrayBufferToBase64/;
+const SYNC_API_RE = /^\$|getLocale|setLocale|sendNativeEvent|restoreGlobal|getCurrentSubNVue|getMenuButtonBoundingClientRect|^report|interceptors|Interceptor$|getSubNVueById|requireNativePlugin|upx2px|hideKeyboard|canIUse|^create|Sync$|Manager$|base64ToArrayBuffer|arrayBufferToBase64/;
 const CONTEXT_API_RE = /^create|Manager$/;
 // Context例外情况
 const CONTEXT_API_RE_EXC = ['createBLEConnection'];
@@ -727,6 +727,30 @@ function initWrapper(protocols) {
     };
 }
 
+const getLocale = () => {
+    // 优先使用 $locale
+    const app = getApp({ allowDefault: true });
+    if (app && app.$vm) {
+        return app.$vm.$locale;
+    }
+    return uni.getSystemInfoSync().language || 'zh-Hans';
+};
+const setLocale = (locale) => {
+    const oldLocale = getApp().$vm.$locale;
+    if (oldLocale !== locale) {
+        getApp().$vm.$locale = locale;
+        onLocaleChangeCallbacks.forEach((fn) => fn({ locale }));
+        return true;
+    }
+    return false;
+};
+const onLocaleChangeCallbacks = [];
+const onLocaleChange = (fn) => {
+    if (onLocaleChangeCallbacks.indexOf(fn) === -1) {
+        onLocaleChangeCallbacks.push(fn);
+    }
+};
+
 const baseApis = {
     $on,
     $off,
@@ -736,6 +760,9 @@ const baseApis = {
     addInterceptor,
     removeInterceptor,
     onAppLaunch,
+    getLocale,
+    setLocale,
+    onLocaleChange,
 };
 function initUni(api, protocols) {
     const wrapper = initWrapper(protocols);
diff --git a/packages/uni-mp-qq/dist/uni.mp.esm.js b/packages/uni-mp-qq/dist/uni.mp.esm.js
index ea73fc1e344f37b13cbe0e2c3772d257b0b5d7a5..d21075e70b357f3097c614fa030aed791f0e4d76 100644
--- a/packages/uni-mp-qq/dist/uni.mp.esm.js
+++ b/packages/uni-mp-qq/dist/uni.mp.esm.js
@@ -1,5 +1,5 @@
 import { isPlainObject, hasOwn, isArray, extend, hyphenate, isObject, toNumber, isFunction, NOOP, camelize } from '@vue/shared';
-import { onUnmounted, injectHook } from 'vue';
+import { onUnmounted, injectHook, ref } from 'vue';
 
 const encode = encodeURIComponent;
 function stringifyQuery(obj, encodeStr = encode) {
@@ -603,6 +603,7 @@ function parseApp(instance, parseAppOptions) {
             instance.$callHook(ON_LAUNCH, extend({ app: this }, options));
         },
     };
+    initLocale(instance);
     const vueOptions = instance.$.type;
     initHooks(appOptions, HOOKS);
     initUnknownHooks(appOptions, vueOptions);
@@ -619,6 +620,17 @@ function initCreateApp(parseAppOptions) {
     return function createApp(vm) {
         return App(parseApp(vm, parseAppOptions));
     };
+}
+function initLocale(appVm) {
+    const locale = ref(uni.getSystemInfoSync().language || 'zh-Hans');
+    Object.defineProperty(appVm, '$locale', {
+        get() {
+            return locale.value;
+        },
+        set(v) {
+            locale.value = v;
+        },
+    });
 }
 
 const PROP_TYPES = [String, Number, Boolean, Object, Array, null];
diff --git a/packages/uni-mp-toutiao/dist/uni.api.esm.js b/packages/uni-mp-toutiao/dist/uni.api.esm.js
index 758ac002d89bcab69f3aa9d501b5a8626c7f1ef9..bae0f52686fa972c905adc09750812cab13dbb4e 100644
--- a/packages/uni-mp-toutiao/dist/uni.api.esm.js
+++ b/packages/uni-mp-toutiao/dist/uni.api.esm.js
@@ -583,7 +583,7 @@ const $emit = defineSyncApi(API_EMIT, (name, ...args) => {
     emitter.emit(name, ...args);
 }, EmitProtocol);
 
-const SYNC_API_RE = /^\$|sendNativeEvent|restoreGlobal|getCurrentSubNVue|getMenuButtonBoundingClientRect|^report|interceptors|Interceptor$|getSubNVueById|requireNativePlugin|upx2px|hideKeyboard|canIUse|^create|Sync$|Manager$|base64ToArrayBuffer|arrayBufferToBase64/;
+const SYNC_API_RE = /^\$|getLocale|setLocale|sendNativeEvent|restoreGlobal|getCurrentSubNVue|getMenuButtonBoundingClientRect|^report|interceptors|Interceptor$|getSubNVueById|requireNativePlugin|upx2px|hideKeyboard|canIUse|^create|Sync$|Manager$|base64ToArrayBuffer|arrayBufferToBase64/;
 const CONTEXT_API_RE = /^create|Manager$/;
 // Context例外情况
 const CONTEXT_API_RE_EXC = ['createBLEConnection'];
@@ -727,6 +727,30 @@ function initWrapper(protocols) {
     };
 }
 
+const getLocale = () => {
+    // 优先使用 $locale
+    const app = getApp({ allowDefault: true });
+    if (app && app.$vm) {
+        return app.$vm.$locale;
+    }
+    return uni.getSystemInfoSync().language || 'zh-Hans';
+};
+const setLocale = (locale) => {
+    const oldLocale = getApp().$vm.$locale;
+    if (oldLocale !== locale) {
+        getApp().$vm.$locale = locale;
+        onLocaleChangeCallbacks.forEach((fn) => fn({ locale }));
+        return true;
+    }
+    return false;
+};
+const onLocaleChangeCallbacks = [];
+const onLocaleChange = (fn) => {
+    if (onLocaleChangeCallbacks.indexOf(fn) === -1) {
+        onLocaleChangeCallbacks.push(fn);
+    }
+};
+
 const baseApis = {
     $on,
     $off,
@@ -736,6 +760,9 @@ const baseApis = {
     addInterceptor,
     removeInterceptor,
     onAppLaunch,
+    getLocale,
+    setLocale,
+    onLocaleChange,
 };
 function initUni(api, protocols) {
     const wrapper = initWrapper(protocols);
diff --git a/packages/uni-mp-toutiao/dist/uni.mp.esm.js b/packages/uni-mp-toutiao/dist/uni.mp.esm.js
index c8cc1366d384df7113c9316b77649037496e8d66..de97b679926b8b5a4763255ca9966a4f1e51aa84 100644
--- a/packages/uni-mp-toutiao/dist/uni.mp.esm.js
+++ b/packages/uni-mp-toutiao/dist/uni.mp.esm.js
@@ -1,5 +1,5 @@
 import { isPlainObject, hasOwn, isArray, extend, hyphenate, isObject, toNumber, isFunction, NOOP, camelize } from '@vue/shared';
-import { onUnmounted, injectHook } from 'vue';
+import { onUnmounted, injectHook, ref } from 'vue';
 
 const encode = encodeURIComponent;
 function stringifyQuery(obj, encodeStr = encode) {
@@ -606,6 +606,7 @@ function parseApp(instance, parseAppOptions) {
             instance.$callHook(ON_LAUNCH, extend({ app: this }, options));
         },
     };
+    initLocale(instance);
     const vueOptions = instance.$.type;
     initHooks(appOptions, HOOKS);
     initUnknownHooks(appOptions, vueOptions);
@@ -622,6 +623,17 @@ function initCreateApp(parseAppOptions) {
     return function createApp(vm) {
         return App(parseApp(vm, parseAppOptions));
     };
+}
+function initLocale(appVm) {
+    const locale = ref(uni.getSystemInfoSync().language || 'zh-Hans');
+    Object.defineProperty(appVm, '$locale', {
+        get() {
+            return locale.value;
+        },
+        set(v) {
+            locale.value = v;
+        },
+    });
 }
 
 const PROP_TYPES = [String, Number, Boolean, Object, Array, null];
diff --git a/packages/uni-mp-weixin/dist/uni.api.esm.js b/packages/uni-mp-weixin/dist/uni.api.esm.js
index 429473fb040a1e6b930bd3cb0bbfc7143eed0ccc..d05147288a89a468a2a3e4d830dd94068c9d6b26 100644
--- a/packages/uni-mp-weixin/dist/uni.api.esm.js
+++ b/packages/uni-mp-weixin/dist/uni.api.esm.js
@@ -547,7 +547,7 @@ const $emit = defineSyncApi(API_EMIT, (name, ...args) => {
     emitter.emit(name, ...args);
 }, EmitProtocol);
 
-const SYNC_API_RE = /^\$|sendNativeEvent|restoreGlobal|getCurrentSubNVue|getMenuButtonBoundingClientRect|^report|interceptors|Interceptor$|getSubNVueById|requireNativePlugin|upx2px|hideKeyboard|canIUse|^create|Sync$|Manager$|base64ToArrayBuffer|arrayBufferToBase64/;
+const SYNC_API_RE = /^\$|getLocale|setLocale|sendNativeEvent|restoreGlobal|getCurrentSubNVue|getMenuButtonBoundingClientRect|^report|interceptors|Interceptor$|getSubNVueById|requireNativePlugin|upx2px|hideKeyboard|canIUse|^create|Sync$|Manager$|base64ToArrayBuffer|arrayBufferToBase64/;
 const CONTEXT_API_RE = /^create|Manager$/;
 // Context例外情况
 const CONTEXT_API_RE_EXC = ['createBLEConnection'];
@@ -691,6 +691,30 @@ function initWrapper(protocols) {
     };
 }
 
+const getLocale = () => {
+    // 优先使用 $locale
+    const app = getApp({ allowDefault: true });
+    if (app && app.$vm) {
+        return app.$vm.$locale;
+    }
+    return uni.getSystemInfoSync().language || 'zh-Hans';
+};
+const setLocale = (locale) => {
+    const oldLocale = getApp().$vm.$locale;
+    if (oldLocale !== locale) {
+        getApp().$vm.$locale = locale;
+        onLocaleChangeCallbacks.forEach((fn) => fn({ locale }));
+        return true;
+    }
+    return false;
+};
+const onLocaleChangeCallbacks = [];
+const onLocaleChange = (fn) => {
+    if (onLocaleChangeCallbacks.indexOf(fn) === -1) {
+        onLocaleChangeCallbacks.push(fn);
+    }
+};
+
 const baseApis = {
     $on,
     $off,
@@ -700,6 +724,9 @@ const baseApis = {
     addInterceptor,
     removeInterceptor,
     onAppLaunch,
+    getLocale,
+    setLocale,
+    onLocaleChange,
 };
 function initUni(api, protocols) {
     const wrapper = initWrapper(protocols);
diff --git a/packages/uni-mp-weixin/dist/uni.mp.esm.js b/packages/uni-mp-weixin/dist/uni.mp.esm.js
index e0ecaf6650cc4334d0ee4709b14c68d2b546e6ed..4fcc49a7f72540babd8ebd074c291c3745bba1c8 100644
--- a/packages/uni-mp-weixin/dist/uni.mp.esm.js
+++ b/packages/uni-mp-weixin/dist/uni.mp.esm.js
@@ -1,5 +1,5 @@
 import { isPlainObject, hasOwn, isArray, extend, hyphenate, isObject, toNumber, isFunction, NOOP, camelize } from '@vue/shared';
-import { onUnmounted, injectHook } from 'vue';
+import { onUnmounted, injectHook, ref } from 'vue';
 
 const encode = encodeURIComponent;
 function stringifyQuery(obj, encodeStr = encode) {
@@ -549,6 +549,7 @@ function parseApp(instance, parseAppOptions) {
             instance.$callHook(ON_LAUNCH, extend({ app: this }, options));
         },
     };
+    initLocale(instance);
     const vueOptions = instance.$.type;
     initHooks(appOptions, HOOKS);
     initUnknownHooks(appOptions, vueOptions);
@@ -565,6 +566,17 @@ function initCreateApp(parseAppOptions) {
     return function createApp(vm) {
         return App(parseApp(vm, parseAppOptions));
     };
+}
+function initLocale(appVm) {
+    const locale = ref(uni.getSystemInfoSync().language || 'zh-Hans');
+    Object.defineProperty(appVm, '$locale', {
+        get() {
+            return locale.value;
+        },
+        set(v) {
+            locale.value = v;
+        },
+    });
 }
 
 const PROP_TYPES = [String, Number, Boolean, Object, Array, null];
diff --git a/packages/uni-quickapp-webview/dist/uni.api.esm.js b/packages/uni-quickapp-webview/dist/uni.api.esm.js
index d6efb2763126e7689038078c20f1c0885614a9db..44740deda87fbd26971a86a7f04ee81b616dce0d 100644
--- a/packages/uni-quickapp-webview/dist/uni.api.esm.js
+++ b/packages/uni-quickapp-webview/dist/uni.api.esm.js
@@ -583,7 +583,7 @@ const $emit = defineSyncApi(API_EMIT, (name, ...args) => {
     emitter.emit(name, ...args);
 }, EmitProtocol);
 
-const SYNC_API_RE = /^\$|sendNativeEvent|restoreGlobal|getCurrentSubNVue|getMenuButtonBoundingClientRect|^report|interceptors|Interceptor$|getSubNVueById|requireNativePlugin|upx2px|hideKeyboard|canIUse|^create|Sync$|Manager$|base64ToArrayBuffer|arrayBufferToBase64/;
+const SYNC_API_RE = /^\$|getLocale|setLocale|sendNativeEvent|restoreGlobal|getCurrentSubNVue|getMenuButtonBoundingClientRect|^report|interceptors|Interceptor$|getSubNVueById|requireNativePlugin|upx2px|hideKeyboard|canIUse|^create|Sync$|Manager$|base64ToArrayBuffer|arrayBufferToBase64/;
 const CONTEXT_API_RE = /^create|Manager$/;
 // Context例外情况
 const CONTEXT_API_RE_EXC = ['createBLEConnection'];
@@ -727,6 +727,30 @@ function initWrapper(protocols) {
     };
 }
 
+const getLocale = () => {
+    // 优先使用 $locale
+    const app = getApp({ allowDefault: true });
+    if (app && app.$vm) {
+        return app.$vm.$locale;
+    }
+    return uni.getSystemInfoSync().language || 'zh-Hans';
+};
+const setLocale = (locale) => {
+    const oldLocale = getApp().$vm.$locale;
+    if (oldLocale !== locale) {
+        getApp().$vm.$locale = locale;
+        onLocaleChangeCallbacks.forEach((fn) => fn({ locale }));
+        return true;
+    }
+    return false;
+};
+const onLocaleChangeCallbacks = [];
+const onLocaleChange = (fn) => {
+    if (onLocaleChangeCallbacks.indexOf(fn) === -1) {
+        onLocaleChangeCallbacks.push(fn);
+    }
+};
+
 const baseApis = {
     $on,
     $off,
@@ -736,6 +760,9 @@ const baseApis = {
     addInterceptor,
     removeInterceptor,
     onAppLaunch,
+    getLocale,
+    setLocale,
+    onLocaleChange,
 };
 function initUni(api, protocols) {
     const wrapper = initWrapper(protocols);
diff --git a/packages/uni-quickapp-webview/dist/uni.mp.esm.js b/packages/uni-quickapp-webview/dist/uni.mp.esm.js
index 84d914f82c0ea1b099e56afce29d649e0adaeabc..5542f38f092dca004d5d3834cdbc1a5f01bd7ddb 100644
--- a/packages/uni-quickapp-webview/dist/uni.mp.esm.js
+++ b/packages/uni-quickapp-webview/dist/uni.mp.esm.js
@@ -1,5 +1,5 @@
 import { isPlainObject, hasOwn, isArray, extend, hyphenate, isObject, toNumber, isFunction, NOOP, camelize } from '@vue/shared';
-import { injectHook } from 'vue';
+import { injectHook, ref } from 'vue';
 
 const encode = encodeURIComponent;
 function stringifyQuery(obj, encodeStr = encode) {
@@ -534,6 +534,7 @@ function parseApp(instance, parseAppOptions) {
             instance.$callHook(ON_LAUNCH, extend({ app: this }, options));
         },
     };
+    initLocale(instance);
     const vueOptions = instance.$.type;
     initHooks(appOptions, HOOKS);
     initUnknownHooks(appOptions, vueOptions);
@@ -550,6 +551,17 @@ function initCreateApp(parseAppOptions) {
     return function createApp(vm) {
         return App(parseApp(vm, parseAppOptions));
     };
+}
+function initLocale(appVm) {
+    const locale = ref(uni.getSystemInfoSync().language || 'zh-Hans');
+    Object.defineProperty(appVm, '$locale', {
+        get() {
+            return locale.value;
+        },
+        set(v) {
+            locale.value = v;
+        },
+    });
 }
 
 const PROP_TYPES = [String, Number, Boolean, Object, Array, null];