diff --git a/dygraph/datasets/ade.py b/dygraph/datasets/ade.py
index 7144fd0f567f03356d72cb15c7ea54d186807915..def88a51dfe8f9bd2870e9b433a57ad60b659575 100644
--- a/dygraph/datasets/ade.py
+++ b/dygraph/datasets/ade.py
@@ -21,7 +21,7 @@ from .dataset import Dataset
 from utils.download import download_file_and_uncompress
 
 DATA_HOME = os.path.expanduser('~/.cache/paddle/dataset')
-URL = "https://paddleseg.bj.bcebos.com/dataset/ADEChallengeData2016.zip"
+URL = "http://data.csail.mit.edu/places/ADEchallenge/ADEChallengeData2016.zip"
 
 
 class ADE20K(Dataset):
diff --git a/dygraph/datasets/voc.py b/dygraph/datasets/voc.py
index 4e2dcf6c3fcc807d0996f498486e498a1151e330..ceb33b9ab2478ff56e6d27921406a644a5e0e7c7 100644
--- a/dygraph/datasets/voc.py
+++ b/dygraph/datasets/voc.py
@@ -17,7 +17,7 @@ from .dataset import Dataset
 from utils.download import download_file_and_uncompress
 
 DATA_HOME = os.path.expanduser('~/.cache/paddle/dataset')
-URL = "https://paddleseg.bj.bcebos.com/dataset/VOCtrainval_11-May-2012.tar"
+URL = "http://host.robots.ox.ac.uk/pascal/VOC/voc2012/VOCtrainval_11-May-2012.tar"
 
 
 class PascalVOC(Dataset):
diff --git a/dygraph/tools/voc_augment.py b/dygraph/tools/voc_augment.py
index adf3943433c2183862484557324633719e525dd7..c4be6ad4e466faf54b52b6accf320c7ec03530bb 100644
--- a/dygraph/tools/voc_augment.py
+++ b/dygraph/tools/voc_augment.py
@@ -30,7 +30,7 @@ import tqdm
 from utils.download import download_file_and_uncompress
 
 DATA_HOME = os.path.expanduser('~/.cache/paddle/dataset')
-URL = 'https://paddleseg.bj.bcebos.com/dataset/benchmark.tgz'
+URL = 'http://www.eecs.berkeley.edu/Research/Projects/CS/vision/grouping/semantic_contours/benchmark.tgz'
 
 
 def parse_args():