diff --git a/ppocr/data/lmdb_dataset.py b/ppocr/data/lmdb_dataset.py
index ffa0522818cd305f624b5fed193e2387dd7e6216..e7bb6dd3c96d24b9dee723e1efdba299e83ad96d 100644
--- a/ppocr/data/lmdb_dataset.py
+++ b/ppocr/data/lmdb_dataset.py
@@ -11,13 +11,9 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-import copy
 import numpy as np
 import os
-import random
-import paddle
 from paddle.io import Dataset
-import time
 import lmdb
 import cv2
 
diff --git a/ppocr/data/simple_dataset.py b/ppocr/data/simple_dataset.py
index e9813cdc9ef9724648ebbf99d97176f31987b8de..e9a0a2ae4c2b77b5a390e7f196f364c529847d71 100644
--- a/ppocr/data/simple_dataset.py
+++ b/ppocr/data/simple_dataset.py
@@ -11,13 +11,10 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-import copy
 import numpy as np
 import os
 import random
-import paddle
 from paddle.io import Dataset
-import time
 
 from .imaug import transform, create_operators