diff --git a/tools/infer/predict_rec.py b/tools/infer/predict_rec.py
index 2abc0220937175f95ee4c1e4b0b949d24d5fa3e8..3664ef2caf4b888d6a3918202256c99cc54c5eb1 100755
--- a/tools/infer/predict_rec.py
+++ b/tools/infer/predict_rec.py
@@ -131,7 +131,7 @@ class TextRecognizer(object):
         padding_im = np.zeros((imgC, imgH, imgW), dtype=np.float32)
         padding_im[:, :, 0:resized_w] = resized_image
         return padding_im
-    
+
     def resize_norm_img_svtr(self, img, image_shape):
 
         imgC, imgH, imgW = image_shape
@@ -274,7 +274,7 @@ class TextRecognizer(object):
                 wh_ratio = w * 1.0 / h
                 max_wh_ratio = max(max_wh_ratio, wh_ratio)
             for ino in range(beg_img_no, end_img_no):
-               
+
                 if self.rec_algorithm == "SAR":
                     norm_img, _, _, valid_ratio = self.resize_norm_img_sar(
                         img_list[indices[ino]], self.rec_image_shape)
@@ -296,8 +296,8 @@ class TextRecognizer(object):
                     gsrm_slf_attn_bias2_list.append(norm_img[4])
                     norm_img_batch.append(norm_img[0])
                 elif self.rec_algorithm == "SVTR":
-                    norm_img = self.resize_norm_img_svtr(
-                        img_list[indices[ino]], self.rec_image_shape)
+                    norm_img = self.resize_norm_img_svtr(img_list[indices[ino]],
+                                                         self.rec_image_shape)
                     norm_img = norm_img[np.newaxis, :]
                     norm_img_batch.append(norm_img)
                 else:
@@ -405,9 +405,13 @@ def main(args):
     valid_image_file_list = []
     img_list = []
 
+    logger.info(
+        "In PP-OCRv3, rec_image_shape parameter defaults to '3, 48, 320', "
+        "if you are using recognition model with PP-OCRv2 or an older version, please set --rec_image_shape='3,32,320"
+    )
     # warmup 2 times
     if args.warmup:
-        img = np.random.uniform(0, 255, [32, 320, 3]).astype(np.uint8)
+        img = np.random.uniform(0, 255, [48, 320, 3]).astype(np.uint8)
         for i in range(2):
             res = text_recognizer([img] * int(args.rec_batch_num))
 
diff --git a/tools/infer/predict_system.py b/tools/infer/predict_system.py
index 534f08fbcb3b90eea6a371d9f0ad128e276874c4..625d365f45c578d051974d7174e26246e9bc2442 100755
--- a/tools/infer/predict_system.py
+++ b/tools/infer/predict_system.py
@@ -133,6 +133,9 @@ def main(args):
     os.makedirs(draw_img_save_dir, exist_ok=True)
     save_results = []
 
+    logger.info("In PP-OCRv3, rec_image_shape parameter defaults to '3, 48, 320', "
+                "if you are using recognition model with PP-OCRv2 or an older version, please set --rec_image_shape='3,32,320")
+                
     # warm up 10 times
     if args.warmup:
         img = np.random.uniform(0, 255, [640, 640, 3]).astype(np.uint8)
diff --git a/tools/infer/utility.py b/tools/infer/utility.py
index 81bee85cf6369d5ca8c947bf6a317fc03da2400f..74ec42ec842abe0f214f13eea6b30a613cfc517b 100644
--- a/tools/infer/utility.py
+++ b/tools/infer/utility.py
@@ -81,7 +81,7 @@ def init_args():
     # params for text recognizer
     parser.add_argument("--rec_algorithm", type=str, default='SVTR_LCNet')
     parser.add_argument("--rec_model_dir", type=str)
-    parser.add_argument("--rec_image_shape", type=str, default="3, 32, 320")
+    parser.add_argument("--rec_image_shape", type=str, default="3, 48, 320")
     parser.add_argument("--rec_batch_num", type=int, default=6)
     parser.add_argument("--max_text_length", type=int, default=25)
     parser.add_argument(