diff --git a/zh-cn/application-dev/reference/apis/js-apis-url.md b/zh-cn/application-dev/reference/apis/js-apis-url.md
index 192a392291922d9c2bb2fb8cd1a33280bf1e555d..b838583320dfbdfa78c52296db0d2b9e5d1ab4b2 100755
--- a/zh-cn/application-dev/reference/apis/js-apis-url.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-url.md
@@ -31,7 +31,7 @@ URLParams的构造函数。
 let objectParams = new Url.URLParams([ ['user1', 'abc1'], ['query2', 'first2'], ['query3', 'second3'] ]);
 let objectParams1 = new Url.URLParams({"fod" : '1' , "bard" : '2'});
 let objectParams2 = new Url.URLParams('?fod=1&bard=2');
-let urlObject = new Url.URL('https://developer.mozilla.org/?fod=1&bard=2');
+let urlObject = Url.URL.parseURL('https://developer.mozilla.org/?fod=1&bard=2');
 let params = new Url.URLParams(urlObject.search);
 ```
 
@@ -54,7 +54,7 @@ append(name: string, value: string): void
 **示例：**
 
 ```js
-let urlObject = new Url.URL('https://developer.exampleUrl/?fod=1&bard=2');
+let urlObject = Url.URL.parseURL('https://developer.exampleUrl/?fod=1&bard=2');
 let paramsObject = new Url.URLParams(urlObject.search.slice(1));
 paramsObject.append('fod', '3');
 ```
@@ -77,7 +77,7 @@ delete(name: string): void
 **示例：**
 
 ```js
-let urlObject = new Url.URL('https://developer.exampleUrl/?fod=1&bard=2');
+let urlObject = Url.URL.parseURL('https://developer.exampleUrl/?fod=1&bard=2');
 let paramsobject = new Url.URLParams(urlObject.search.slice(1));
 paramsobject.delete('fod');
 ```
@@ -106,7 +106,7 @@ getAll(name: string): string[]
 **示例：**
 
 ```js
-let urlObject = new Url.URL('https://developer.exampleUrl/?fod=1&bard=2');
+let urlObject = Url.URL.parseURL('https://developer.exampleUrl/?fod=1&bard=2');
 let params = new Url.URLParams(urlObject.search.slice(1));
 params.append('fod', '3'); // Add a second value for the fod parameter.
 console.log(params.getAll('fod').toString()) // Output ["1","3"].
@@ -131,7 +131,7 @@ entries(): IterableIterator<[string, string]>
 
 ```js
 let searchParamsObject = new Url.URLParams("keyName1=valueName1&keyName2=valueName2"); 
-for (var pair of searchParamsObject .entries()) { // Show keyName/valueName pairs
+for (var pair of searchParamsObject.entries()) { // Show keyName/valueName pairs
     console.log(pair[0]+ ', '+ pair[1]);
 }
 ```
@@ -223,7 +223,7 @@ has(name: string): boolean
 **示例：**
 
 ```js
-let urlObject = new Url.URL('https://developer.exampleUrl/?fod=1&bard=2');
+let urlObject = Url.URL.parseURL('https://developer.exampleUrl/?fod=1&bard=2');
 let paramsObject = new Url.URLParams(urlObject.search.slice(1)); 
 paramsObject.has('bard') === true;
 ```
@@ -247,7 +247,7 @@ set(name: string, value: string): void
 **示例：**
 
 ```js
-let urlObject = new Url.URL('https://developer.exampleUrl/?fod=1&bard=2');
+let urlObject = Url.URL.parseURL('https://developer.exampleUrl/?fod=1&bard=2');
 let paramsObject = new Url.URLParams(urlObject.search.slice(1));
 paramsObject.set('baz', '3'); // Add a third parameter.
 ```
@@ -359,7 +359,7 @@ toString(): string
 **示例：**
 
 ```js
-let url = new Url.URL('https://developer.exampleUrl/?fod=1&bard=2');
+let url = Url.URL.parseURL('https://developer.exampleUrl/?fod=1&bard=2');
 let params = new Url.URLParams(url.search.slice(1)); 
 params.append('fod', '3');
 console.log(params.toString());
@@ -422,8 +422,16 @@ new Url.URL('https://www.example.com', ); // Output https://www.example.com/
 new Url.URL('https://www.example.com', b); // Output https://www.example.com/
 ```
 
-### parseURL<sup>9+</sup>
+### constructor<sup>9+</sup>
+
+constructor()
+
+URL的无参构造函数。parseURL调用后返回一个URL对象，不单独使用。
 
+**系统能力：** SystemCapability.Utils.Lang
+
+### parseURL<sup>9+</sup>
+                                            
 static parseURL(url : string, base?: string | URL): URL
 
 URL静态成员函数。
@@ -441,7 +449,8 @@ URL静态成员函数。
 
 ```js
 let mm = 'https://username:password@host:8080';
-Url.URL.parseURL(mm); // Output 'https://username:password@host:8080/';
+let url = Url.URL.parseURL(mm); 
+url.toString(); // Output 'https://username:password@host:8080/';
 ```
 
 ### tostring
@@ -461,7 +470,7 @@ toString(): string
 **示例：**
 
 ```js
-const url = new Url.URL('https://username:password@host:8080/directory/file?query=pppppp#qwer=da');
+const url = Url.URL.parseURL('https://username:password@host:8080/directory/file?query=pppppp#qwer=da');
 url.toString();
 ```
 
@@ -481,7 +490,7 @@ toJSON(): string
 
 **示例：**
 ```js
-const url = new Url.URL('https://username:password@host:8080/directory/file?query=pppppp#qwer=da');
+const url = Url.URL.parseURL('https://username:password@host:8080/directory/file?query=pppppp#qwer=da');
 url.toJSON();
 ```
 
@@ -623,7 +632,7 @@ entries(): IterableIterator<[string, string]>
 
 ```js
 let searchParamsObject = new Url.URLSearchParams("keyName1=valueName1&keyName2=valueName2"); 
-for (var pair of searchParamsObject .entries()) { // Show keyName/valueName pairs
+for (var pair of searchParamsObject.entries()) { // Show keyName/valueName pairs
     console.log(pair[0]+ ', '+ pair[1]);
 }
 ```