diff --git a/debug/accuracy_tools/grad_tool/grad_pt/grad_monitor.py b/debug/accuracy_tools/grad_tool/grad_pt/grad_monitor.py
index 246ea337b0caa996521971aecfdefeb92712f335..f3b1be2b5603d84714b149bd2a35056832eaeb48 100644
--- a/debug/accuracy_tools/grad_tool/grad_pt/grad_monitor.py
+++ b/debug/accuracy_tools/grad_tool/grad_pt/grad_monitor.py
@@ -49,6 +49,9 @@ class PtGradientMonitor(BaseMonitor):
                 if not data_in_list_target(param_name, self._param_list):
                     continue
                 grad = param.main_grad if hasattr(param, "main_grad") else param.grad
+                if grad is None:
+                    print_info_log(f"grad is None: {param_name}")
+                    continue
                 grad_info = GradStatCsv.generate_csv_line(
                     level=self._level_adp, 
                     param_name=param_name,