diff --git a/docs/guides/model_convert/convert_from_pytorch/api_difference/others/torch.special.psi.md b/docs/guides/model_convert/convert_from_pytorch/api_difference/others/torch.special.psi.md
index 041ab635dae..15c285a0400 100644
--- a/docs/guides/model_convert/convert_from_pytorch/api_difference/others/torch.special.psi.md
+++ b/docs/guides/model_convert/convert_from_pytorch/api_difference/others/torch.special.psi.md
@@ -23,7 +23,7 @@ paddle.digamma(x,
 #### out：指定输出
 ```python
 # Pytorch 写法
-torch.special.psi(input), out=y)
+torch.special.psi(input, out=y)
 
 # Paddle 写法
 paddle.assign(paddle.digamma(input), y)