diff --git a/deploy/cpp_infer/tools/config.txt b/deploy/cpp_infer/tools/config.txt
index e185377e2f2c9cbd5c1d8ed09ba43df9c41c05d2..24e4ef0de7d844ba4bd6c11f2cba08766c0e5ddf 100644
--- a/deploy/cpp_infer/tools/config.txt
+++ b/deploy/cpp_infer/tools/config.txt
@@ -9,7 +9,7 @@ use_mkldnn 0
 max_side_len  960
 det_db_thresh  0.3
 det_db_box_thresh  0.5
-det_db_unclip_ratio  2.0
+det_db_unclip_ratio  1.6
 det_model_dir  ./inference/ch_ppocr_mobile_v2.0_det_infer/
 
 # cls config
diff --git a/tools/infer/predict_det.py b/tools/infer/predict_det.py
index 077692afa84a745cb1b1fcb5b2c71f3dd5653013..26febf1c0da21f8b53114e2e236a5ea246e823a8 100755
--- a/tools/infer/predict_det.py
+++ b/tools/infer/predict_det.py
@@ -64,7 +64,7 @@ class TextDetector(object):
             postprocess_params["box_thresh"] = args.det_db_box_thresh
             postprocess_params["max_candidates"] = 1000
             postprocess_params["unclip_ratio"] = args.det_db_unclip_ratio
-            postprocess_params["use_dilation"] = True
+            postprocess_params["use_dilation"] = args.use_dialtion
         elif self.det_algorithm == "EAST":
             postprocess_params['name'] = 'EASTPostProcess'
             postprocess_params["score_thresh"] = args.det_east_score_thresh
diff --git a/tools/infer/utility.py b/tools/infer/utility.py
index a4a91efdd2ec04e2a2959c77a444549ad413c13d..18dedbda99c11d5b877388c1c516b2548b1a8335 100755
--- a/tools/infer/utility.py
+++ b/tools/infer/utility.py
@@ -47,7 +47,8 @@ def parse_args():
     parser.add_argument("--det_db_box_thresh", type=float, default=0.5)
     parser.add_argument("--det_db_unclip_ratio", type=float, default=1.6)
     parser.add_argument("--max_batch_size", type=int, default=10)
-    parser.add_argument("--use_dilation", type=bool, default=False)
+    parser.add_argument("--use_dialtion", type=bool, default=False)
+    
     # EAST parmas
     parser.add_argument("--det_east_score_thresh", type=float, default=0.8)
     parser.add_argument("--det_east_cover_thresh", type=float, default=0.1)