diff --git a/ppocr/data/imaug/operators.py b/ppocr/data/imaug/operators.py
index ed81d41a59c131014bb98569c5cef2b1512cfb41..2535b4420c503f2e9e9cc5a677ef70c4dd9c36be 100644
--- a/ppocr/data/imaug/operators.py
+++ b/ppocr/data/imaug/operators.py
@@ -122,8 +122,6 @@ class DetResizeForTest(object):
         elif 'limit_side_len' in kwargs:
             self.limit_side_len = kwargs['limit_side_len']
             self.limit_type = kwargs.get('limit_type', 'min')
-            self.pad = kwargs.get('pad', False)
-            self.pad_size = kwargs.get('pad_size', 480)
         elif 'resize_long' in kwargs:
             self.resize_type = 2
             self.resize_long = kwargs.get('resize_long', 960)
@@ -174,11 +172,9 @@ class DetResizeForTest(object):
                     ratio = float(limit_side_len) / h
                 else:
                     ratio = float(limit_side_len) / w
-            elif self.pad:
-                ratio = float(self.pad_size) / max(h, w)
             else:
                 ratio = 1.
-        else:
+        elif self.limit_type == 'min':
             if min(h, w) < limit_side_len:
                 if h < w:
                     ratio = float(limit_side_len) / h
@@ -186,6 +182,10 @@ class DetResizeForTest(object):
                     ratio = float(limit_side_len) / w
             else:
                 ratio = 1.
+        elif self.limit_type == 'resize_long':
+            ratio = float(limit_side_len) / max(h,w)
+        else:
+            raise Exception('not support limit type, image ')
         resize_h = int(h * ratio)
         resize_w = int(w * ratio)
 
@@ -201,10 +201,6 @@ class DetResizeForTest(object):
             sys.exit(0)
         ratio_h = resize_h / float(h)
         ratio_w = resize_w / float(w)
-        if self.limit_type == 'max' and self.pad:
-            padding_im = np.zeros((self.pad_size, self.pad_size, c), dtype=np.float32)
-            padding_im[:resize_h, :resize_w, :] = img
-            img = padding_im
         return img, [ratio_h, ratio_w]
 
     def resize_image_type2(self, img):
diff --git a/ppstructure/predict_system.py b/ppstructure/predict_system.py
index 907548e77fb88f39e7e63b1dcf5451baa3b479a6..2cdfcce2eb3ad4abe4407f781eb99e3591ecebde 100644
--- a/ppstructure/predict_system.py
+++ b/ppstructure/predict_system.py
@@ -38,8 +38,7 @@ logger = get_logger()
 
 class OCRSystem(object):
     def __init__(self, args):
-        args.det_pad = True
-        args.det_pad_size = 960
+        args.det_limit_type = 'resize_long'
         args.drop_score = 0
         self.text_system = TextSystem(args)
         self.table_system = TableSystem(args, self.text_system.text_detector, self.text_system.text_recognizer)
diff --git a/tools/infer/predict_det.py b/tools/infer/predict_det.py
index b21db4c7f7c25c7327fd5fc374c3a9bd91c2db3d..265ab592f7d93af8ad7c766412842d5921d47711 100755
--- a/tools/infer/predict_det.py
+++ b/tools/infer/predict_det.py
@@ -42,8 +42,6 @@ class TextDetector(object):
             'DetResizeForTest': {
                 'limit_side_len': args.det_limit_side_len,
                 'limit_type': args.det_limit_type,
-                'pad':args.det_pad,
-                'pad_size':args.det_pad_size
             }
         }, {
             'NormalizeImage': {
diff --git a/tools/infer/utility.py b/tools/infer/utility.py
index 9fb2e8e5f9ac608ea12fa902aca30b2ea5f03b2f..a558f490f941ab0dd940329ff7c82c49b6eb31e7 100755
--- a/tools/infer/utility.py
+++ b/tools/infer/utility.py
@@ -46,8 +46,6 @@ def init_args():
     parser.add_argument("--det_model_dir", type=str)
     parser.add_argument("--det_limit_side_len", type=float, default=960)
     parser.add_argument("--det_limit_type", type=str, default='max')
-    parser.add_argument("--det_pad", type=str2bool, default=False)
-    parser.add_argument("--det_pad_size", type=int, default=640)
 
     # DB parmas
     parser.add_argument("--det_db_thresh", type=float, default=0.3)