diff --git a/tools/infer/utility.py b/tools/infer/utility.py
index ea242adf704577adffca2b035df504df23dceee9..86c6e2396e3e398085a545deac318096174dad87 100755
--- a/tools/infer/utility.py
+++ b/tools/infer/utility.py
@@ -51,7 +51,7 @@ def init_args():
     parser.add_argument("--det_db_box_thresh", type=float, default=0.6)
     parser.add_argument("--det_db_unclip_ratio", type=float, default=1.5)
     parser.add_argument("--max_batch_size", type=int, default=10)
-    parser.add_argument("--use_dilation", type=bool, default=False)
+    parser.add_argument("--use_dilation", type=str2bool, default=False)
     parser.add_argument("--det_db_score_mode", type=str, default="fast")
     # EAST parmas
     parser.add_argument("--det_east_score_thresh", type=float, default=0.8)
@@ -61,7 +61,7 @@ def init_args():
     # SAST parmas
     parser.add_argument("--det_sast_score_thresh", type=float, default=0.5)
     parser.add_argument("--det_sast_nms_thresh", type=float, default=0.2)
-    parser.add_argument("--det_sast_polygon", type=bool, default=False)
+    parser.add_argument("--det_sast_polygon", type=str2bool, default=False)
 
     # PSE parmas
     parser.add_argument("--det_pse_thresh", type=float, default=0)
@@ -97,7 +97,7 @@ def init_args():
     parser.add_argument(
         "--e2e_char_dict_path", type=str, default="./ppocr/utils/ic15_dict.txt")
     parser.add_argument("--e2e_pgnet_valid_set", type=str, default='totaltext')
-    parser.add_argument("--e2e_pgnet_polygon", type=bool, default=True)
+    parser.add_argument("--e2e_pgnet_polygon", type=str2bool, default=True)
     parser.add_argument("--e2e_pgnet_mode", type=str, default='fast')
 
     # params for text classifier
@@ -118,7 +118,7 @@ def init_args():
     parser.add_argument("--total_process_num", type=int, default=1)
     parser.add_argument("--process_id", type=int, default=0)
 
-    parser.add_argument("--benchmark", type=bool, default=False)
+    parser.add_argument("--benchmark", type=str2bool, default=False)
     parser.add_argument("--save_log_path", type=str, default="./log_output/")
 
     parser.add_argument("--show_log", type=str2bool, default=True)
@@ -217,22 +217,22 @@ def create_predictor(args, mode, logger):
                 "nearest_interp_v2_0.tmp_0": [1, 256, 40, 40]
             }
             min_pact_shape = {
-                "nearest_interp_v2_26.tmp_0":[1,256,20,20],
-                "nearest_interp_v2_27.tmp_0":[1,64,20,20],
-                "nearest_interp_v2_28.tmp_0":[1,64,20,20],
-                "nearest_interp_v2_29.tmp_0":[1,64,20,20]
+                "nearest_interp_v2_26.tmp_0": [1, 256, 20, 20],
+                "nearest_interp_v2_27.tmp_0": [1, 64, 20, 20],
+                "nearest_interp_v2_28.tmp_0": [1, 64, 20, 20],
+                "nearest_interp_v2_29.tmp_0": [1, 64, 20, 20]
             }
             max_pact_shape = {
-                "nearest_interp_v2_26.tmp_0":[1,256,400,400],
-                "nearest_interp_v2_27.tmp_0":[1,64,400,400],
-                "nearest_interp_v2_28.tmp_0":[1,64,400,400],
-                "nearest_interp_v2_29.tmp_0":[1,64,400,400]
+                "nearest_interp_v2_26.tmp_0": [1, 256, 400, 400],
+                "nearest_interp_v2_27.tmp_0": [1, 64, 400, 400],
+                "nearest_interp_v2_28.tmp_0": [1, 64, 400, 400],
+                "nearest_interp_v2_29.tmp_0": [1, 64, 400, 400]
             }
             opt_pact_shape = {
-                "nearest_interp_v2_26.tmp_0":[1,256,160,160],
-                "nearest_interp_v2_27.tmp_0":[1,64,160,160],
-                "nearest_interp_v2_28.tmp_0":[1,64,160,160],
-                "nearest_interp_v2_29.tmp_0":[1,64,160,160]
+                "nearest_interp_v2_26.tmp_0": [1, 256, 160, 160],
+                "nearest_interp_v2_27.tmp_0": [1, 64, 160, 160],
+                "nearest_interp_v2_28.tmp_0": [1, 64, 160, 160],
+                "nearest_interp_v2_29.tmp_0": [1, 64, 160, 160]
             }
             min_input_shape.update(min_pact_shape)
             max_input_shape.update(max_pact_shape)