diff --git a/ppcls/arch/backbone/legendary_models/inception_v3.py b/ppcls/arch/backbone/legendary_models/inception_v3.py
index 39ca176f3b45868f84092b9b06bf4455a892f19b..7777a31695f44428e0e08add3e580c3bd5d51584 100644
--- a/ppcls/arch/backbone/legendary_models/inception_v3.py
+++ b/ppcls/arch/backbone/legendary_models/inception_v3.py
@@ -467,7 +467,7 @@ def InceptionV3(**kwargs):
     Args:
         kwargs: 
             class_num: int=1000. Output dim of last fc layer.
-            pretrained: 
+            pretrained: str, pretrained model file
     Returns:
         model: nn.Layer. Specific `InceptionV3` model 
     """