diff --git a/x2paddle/op_mapper/onnx2paddle/opset9/opset.py b/x2paddle/op_mapper/onnx2paddle/opset9/opset.py
index 20538cc7051b725abc09d728610e9caf3b13a0d2..ef3c670a114902ed6a1a8930dc44993e3ecefe26 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: