diff --git a/app/api/v1/interaction.py b/app/api/v1/interaction.py
index dbc2c13..b294346 100644
--- a/app/api/v1/interaction.py
+++ b/app/api/v1/interaction.py
@@ -27,7 +27,7 @@ def add_interaction(json_data):
     except Exception as e:
         raise AddInteractionError(extra_data={'error_docs': str(e)})
     if is_existed:
-        return {'msg': '已经提交过，不能再次提交～', 'code': 401}
+        return {'msg': '不能重复提交了～', 'code': 401}
     return {'msg': 'add interaction successfully', 'code': 200}