diff --git a/lib/common/service/connectionService.js b/lib/common/service/connectionService.js
index c75d40919..ff7984cb1 100644
--- a/lib/common/service/connectionService.js
+++ b/lib/common/service/connectionService.js
@@ -28,6 +28,24 @@ pro.addLoginedUser = function(uid, info) {
   this.logined[uid] = info;
 };
 
+/**
+ * Update user info.
+ * @param uid {String} user id
+ * @param info {Object} info for update.
+ */
+pro.updateUserInfo = function(uid, info) {
+    var user = this.logined[uid];
+    if (!user) {
+        return;
+    }
+
+    for (var p in info) {
+        if (info.hasOwnProperty(p) && typeof info[p] !== 'function') {
+            user[p] = info[p];
+        }
+    }
+};
+
 /**
  * Increase connection count
  */