diff --git a/deploy/python/preprocess.py b/deploy/python/preprocess.py
index 6952708337f8c0fb353d6c9f98bc7b91882163e8..325fb02c53f7eb714d7c8fd7f98f51233183048a 100644
--- a/deploy/python/preprocess.py
+++ b/deploy/python/preprocess.py
@@ -29,7 +29,7 @@ import importlib
 from PIL import Image
 from paddle.vision.transforms import ToTensor, Normalize
 
-from python.det_preprocess import DetNormalizeImage, DetPadStride, DetPermute, DetResize
+from paddleclas.deploy.python.det_preprocess import DetNormalizeImage, DetPadStride, DetPermute, DetResize
 
 
 def create_operators(params):