diff --git a/paddle/fluid/pybind/eval_frame.c b/paddle/fluid/pybind/eval_frame.c
index 5b4f216be24dc7..6a647ae50818f1 100644
--- a/paddle/fluid/pybind/eval_frame.c
+++ b/paddle/fluid/pybind/eval_frame.c
@@ -458,6 +458,7 @@ inline static PyObject *eval_custom_code_py311_plus(PyThreadState *tstate,
   // Create a new function object from code object. Refer to MAKE_FUNCTION.
   PyFunctionObject *func =
       (PyFunctionObject *)PyFunction_New((PyObject *)code, frame->f_globals);
+  Py_INCREF(func);
 #if PY_VERSION_HEX < 0x030c0000
   Py_XINCREF(frame->f_func->func_closure);
   func->func_closure = frame->f_func->func_closure;