diff --git a/fastrunner/utils/parser.py b/fastrunner/utils/parser.py
index 73e035f..033ae41 100644
--- a/fastrunner/utils/parser.py
+++ b/fastrunner/utils/parser.py
@@ -801,7 +801,7 @@ def get_batch_api_detail(self, api_ids):
 
         def handle_request(response):
             try:
-                res = json.loads(response.body, encoding='utf-8')
+                res = json.loads(response.body)
                 api_info.append(res['data'])
             except Exception as e:
                 err_info.add(e)