diff --git a/modelscope/utils/ast_utils.py b/modelscope/utils/ast_utils.py
index 263a81b3..62c31397 100644
--- a/modelscope/utils/ast_utils.py
+++ b/modelscope/utils/ast_utils.py
@@ -394,7 +394,7 @@ class AstScaning(object):
 
     def generate_ast(self, file):
         self._refresh()
-        with open(file, 'r') as code:
+        with open(file, 'r', encoding='utf8') as code:
             data = code.readlines()
         data = ''.join(data)