diff --git a/docs/apis/utils.md b/docs/apis/utils.md
index 69b2bc2..d84dea7 100644
--- a/docs/apis/utils.md
+++ b/docs/apis/utils.md
@@ -14,9 +14,7 @@
 
 如果你需要你的二维码永不过期，设定`expire=False`即可。
 
-关于数据，如果你的二维码是会过期的，那数据可以是字符串或者是数字。
-
-否则的话只能是数字。
+数据类型为 `int` 或 `str` 详细说明可以参考[官方文档][mp-wiki]
 
 ```python
 r = itchatmp.utils.create_qrcode('test-tag', expire=5000)
diff --git a/itchatmp/controllers/mpapi/mp/utils.py b/itchatmp/controllers/mpapi/mp/utils.py
index 54884c8..34f8b80 100644
--- a/itchatmp/controllers/mpapi/mp/utils.py
+++ b/itchatmp/controllers/mpapi/mp/utils.py
@@ -25,14 +25,15 @@ def create_qrcode(sceneData, expire=2592000, accessToken=None):
             'sceneData should be int or string'})
 
     if expire:
-        if not isinstance(sceneData, int):
-            return ReturnValue({'errcode': -10003, 'errmsg':
-                'sceneData for tmp qrcode can only be int'})
         if not 0 < expire < 2592000:
             expire = 2592000
         data['expire_seconds'] = expire
-        data['action_name'] = 'QR_SCENE'
-        data['action_info']['scene']['scene_id'] = sceneData
+        if isinstance(sceneData, int):
+            data['action_name'] = 'QR_SCENE'
+            data['action_info']['scene']['scene_id'] = sceneData
+        else:
+            data['action_name'] = 'QR_STR_SCENE'
+            data['action_info']['scene']['scene_str'] = sceneData
     else:
         if isinstance(sceneData, int):
             data['action_name'] = 'QR_LIMIT_SCENE'
@@ -81,7 +82,7 @@ def _download_qrcode(ticket):
                     tempStorage.write(block)
                 r = ReturnValue({'File': tempStorage, 'errcode': 0})
             return r
-    return _download_qrcode()
+    return _download_qrcode(ticket)
 
 def long_url_to_short(url, accessToken=None):
     data = {'action': 'long2short', 'long_url': url}