diff --git a/x2paddle/op_mapper/onnx2paddle/opset9/opset.py b/x2paddle/op_mapper/onnx2paddle/opset9/opset.py
index 3cb60ffa4145a455f0552c092ae31a324b3702ad..2ee3aca7ac6d42fc2de3209aca18500c71284227 100644
--- a/x2paddle/op_mapper/onnx2paddle/opset9/opset.py
+++ b/x2paddle/op_mapper/onnx2paddle/opset9/opset.py
@@ -40,7 +40,7 @@ def _const_weight_or_none(node):
     return None
 
 
-def get_same_padding(in_size, kernel_size, stride):
+def _get_same_padding(in_size, kernel_size, stride):
     new_size = int(math.ceil(in_size * 1.0 / stride))
     pad_size = (new_size - 1) * stride + kernel_size - in_size
     pad0 = int(pad_size / 2)
@@ -1305,11 +1305,11 @@ class OpSet9():
         paddings, val_x = self._pad_if_asymmetric(node, pads, val_x)
 
         if auto_pad == "SAME_UPPER" or auto_pad == "SAME_LOWER":
-            pad_h = get_same_padding(input_shape[2], kernel_shape[0],
-                                     strides[0])
-            pad_w = get_same_padding(input_shape[3], kernel_shape[1],
-                                     strides[1])
-            attr = {"paddings": pad_h + pad_w, "pad_value": 0.0}
+            pad_h = _get_same_padding(input_shape[2], kernel_shape[0],
+                                      strides[0])
+            pad_w = _get_same_padding(input_shape[3], kernel_shape[1],
+                                      strides[1])
+            paddings = pad_h + pad_w
 
         attr = {
             "num_filters": num_out_channels,