diff --git a/tools/infer_det.py b/tools/infer_det.py
index a964cd28c934504ce79ea4873d3345295c1266e5..ce16da8dc5fffb3f5fdc633aeb00a386a2d60d4f 100755
--- a/tools/infer_det.py
+++ b/tools/infer_det.py
@@ -34,23 +34,21 @@ import paddle
 from ppocr.data import create_operators, transform
 from ppocr.modeling.architectures import build_model
 from ppocr.postprocess import build_post_process
-from ppocr.utils.save_load import init_model
+from ppocr.utils.save_load import init_model, load_dygraph_params
 from ppocr.utils.utility import get_image_file_list
 import tools.program as program
 
 
-def draw_det_res(dt_boxes, config, img, img_name):
+def draw_det_res(dt_boxes, config, img, img_name, save_path):
     if len(dt_boxes) > 0:
         import cv2
         src_im = img
         for box in dt_boxes:
             box = box.astype(np.int32).reshape((-1, 1, 2))
             cv2.polylines(src_im, [box], True, color=(255, 255, 0), thickness=2)
-        save_det_path = os.path.dirname(config['Global'][
-            'save_res_path']) + "/det_results/"
-        if not os.path.exists(save_det_path):
-            os.makedirs(save_det_path)
-        save_path = os.path.join(save_det_path, os.path.basename(img_name))
+        if not os.path.exists(save_path):
+            os.makedirs(save_path)
+        save_path = os.path.join(save_path, os.path.basename(img_name))
         cv2.imwrite(save_path, src_im)
         logger.info("The detected Image saved in {}".format(save_path))
 
@@ -61,8 +59,7 @@ def main():
     # build model
     model = build_model(config['Architecture'])
 
-    init_model(config, model)
-
+    _ = load_dygraph_params(config, model, logger, None)
     # build post process
     post_process_class = build_post_process(config['PostProcess'])
 
@@ -96,17 +93,41 @@ def main():
             images = paddle.to_tensor(images)
             preds = model(images)
             post_result = post_process_class(preds, shape_list)
-            boxes = post_result[0]['points']
-            # write result
+
+            src_img = cv2.imread(file)
+
             dt_boxes_json = []
-            for box in boxes:
-                tmp_json = {"transcription": ""}
-                tmp_json['points'] = box.tolist()
-                dt_boxes_json.append(tmp_json)
+            # parser boxes if post_result is dict
+            if isinstance(post_result, dict):
+                det_box_json = {}
+                for k in post_result.keys():
+                    boxes = post_result[k][0]['points']
+                    dt_boxes_list = []
+                    for box in boxes:
+                        tmp_json = {"transcription": ""}
+                        tmp_json['points'] = box.tolist()
+                        dt_boxes_list.append(tmp_json)
+                    det_box_json[k] = dt_boxes_list
+                    save_det_path = os.path.dirname(config['Global'][
+                        'save_res_path']) + "/det_results_{}/".format(k)
+                    draw_det_res(boxes, config, src_img, file, save_det_path)
+            else:
+                boxes = post_result[0]['points']
+                dt_boxes_json = []
+                # write result
+                for box in boxes:
+                    tmp_json = {"transcription": ""}
+                    tmp_json['points'] = box.tolist()
+                    dt_boxes_json.append(tmp_json)
+                save_det_path = os.path.dirname(config['Global'][
+                    'save_res_path']) + "/det_results/"
+                draw_det_res(boxes, config, src_img, file, save_det_path)
             otstr = file + "\t" + json.dumps(dt_boxes_json) + "\n"
             fout.write(otstr.encode())
-            src_img = cv2.imread(file)
-            draw_det_res(boxes, config, src_img, file)
+
+            save_det_path = os.path.dirname(config['Global'][
+                'save_res_path']) + "/det_results/"
+            draw_det_res(boxes, config, src_img, file, save_det_path)
     logger.info("success!")