diff --git a/applications/data/DATA_comm.c b/applications/data/DATA_comm.c
index f8e5e0d..9ff8831 100644
--- a/applications/data/DATA_comm.c
+++ b/applications/data/DATA_comm.c
@@ -103,16 +103,17 @@ void pasre_DAT(const char *api, const char *json_str)
         json_buffer=NULL;
     }
 
-    if(strlen(json_str)>4)
+    if(strlen(json_str)>10)
     {
-         cjson_falg=1;
+        cjson_falg=1;
       //判断json解析是否成功
-         if(!root)
-         {
-             rt_kprintf("JSON parse error :%s\n",cJSON_GetErrorPtr());
-             cJSON_Delete(root);
-        //  return "JSON parse error\n";
-         }
+        if(!root)
+        {
+            rt_kprintf("JSON parse error :%s\n",cJSON_GetErrorPtr());
+            cJSON_Delete(root);
+            cJSON_Delete(dat);
+            return;
+        }
     }
 
     if (strcmp(api, "SC800") == 0)