diff --git a/paddle/fluid/eager/auto_code_generator/final_state_generator/python_c_gen.py b/paddle/fluid/eager/auto_code_generator/final_state_generator/python_c_gen.py
index d5645ecfd83c2f0f31c5152731fc3aa05463769e..203e0098a64d4aec79aff72454d1d11461ea068e 100644
--- a/paddle/fluid/eager/auto_code_generator/final_state_generator/python_c_gen.py
+++ b/paddle/fluid/eager/auto_code_generator/final_state_generator/python_c_gen.py
@@ -31,7 +31,6 @@ atype_to_parsing_function = {
     "bool": "CastPyArg2Boolean",
     "int": "CastPyArg2Int",
     "long": "CastPyArg2Long",
-    "std::string": "CastPyArg2String",
     "int64_t": "CastPyArg2Long",
     "float": "CastPyArg2Float",
     "std::string": "CastPyArg2String",