diff --git a/src/platforms/mp-weixin/helpers/enhance-system-info.js b/src/platforms/mp-weixin/helpers/enhance-system-info.js
index 638aaf57e0c9c18541374353080a6e0cb02e3c08..e618ea41cc6d292ff05f0bdf4699d7a72d8c6c6e 100644
--- a/src/platforms/mp-weixin/helpers/enhance-system-info.js
+++ b/src/platforms/mp-weixin/helpers/enhance-system-info.js
@@ -79,7 +79,7 @@ export function populateParameters (result) {
   if (__PLATFORM__ === 'mp-alipay') { _SDKVersion = my.SDKVersion }
 
   // hostLanguage
-  const hostLanguage = language.replace(/_/g, '-')
+  const hostLanguage = (language || '').replace(/_/g, '-')
 
   // wx.getAccountInfoSync
 
diff --git a/src/platforms/mp-weixin/helpers/get-app-base-info.js b/src/platforms/mp-weixin/helpers/get-app-base-info.js
index e6279cf52f0ad921e690165d1e588e387e0de781..0beb207af51ceca9ace6e97b114645e28050fbaf 100644
--- a/src/platforms/mp-weixin/helpers/get-app-base-info.js
+++ b/src/platforms/mp-weixin/helpers/get-app-base-info.js
@@ -7,7 +7,7 @@ export default {
 
     const _hostName = getHostName(result)
 
-    const hostLanguage = language.replace('_', '-')
+    const hostLanguage = (language || '').replace('_', '-')
 
     result = sortObject(Object.assign(result, {
       appId: process.env.UNI_APP_ID,