diff --git a/x2paddle/op_mapper/onnx2paddle/opset9/opset.py b/x2paddle/op_mapper/onnx2paddle/opset9/opset.py
index c08be94567bc9a7fd1caa9c206d2f6cf6bd30a92..e09302d542875b316f14038d8ef3030a8d6ac20c 100644
--- a/x2paddle/op_mapper/onnx2paddle/opset9/opset.py
+++ b/x2paddle/op_mapper/onnx2paddle/opset9/opset.py
@@ -411,6 +411,7 @@ class OpSet9():
         output_shape = node.out_shapes[0]
         assume_pad2d = False
         attr = {}
+        paddings = []
         if len(pads) == 4:
             assume_pad2d |= mode != 'constant'
             if data_shape: