diff --git a/mmdeploy/codebase/mmcls/deploy/classification_model.py b/mmdeploy/codebase/mmcls/deploy/classification_model.py
index 458c66ef8a..f7f3bbfe73 100644
--- a/mmdeploy/codebase/mmcls/deploy/classification_model.py
+++ b/mmdeploy/codebase/mmcls/deploy/classification_model.py
@@ -98,7 +98,7 @@ def forward_test(self, imgs: torch.Tensor, *args, **kwargs) -> \
     def show_result(self,
                     img: np.ndarray,
                     result: list,
-                    win_name: str,
+                    win_name: str = '',
                     show: bool = True,
                     out_file: str = None):
         """Show predictions of classification.
diff --git a/mmdeploy/codebase/mmocr/deploy/mmocr.py b/mmdeploy/codebase/mmocr/deploy/mmocr.py
index 5bc95bf2c6..c97d2958a4 100644
--- a/mmdeploy/codebase/mmocr/deploy/mmocr.py
+++ b/mmdeploy/codebase/mmocr/deploy/mmocr.py
@@ -4,6 +4,7 @@
 import mmcv
 import torch
 from mmcv.utils import Registry
+from packaging import version
 from torch.utils.data import DataLoader, Dataset
 
 from mmdeploy.codebase.base import CODEBASE, BaseTask, MMCodebase
@@ -137,6 +138,11 @@ def single_gpu_test(model: torch.nn.Module,
         Returns:
             list: The prediction results.
         """
-        from mmdet.apis import single_gpu_test
+        import mmocr
+        # fixed the bug when using `--show-dir` after mocr v0.4.1
+        if version.parse(mmocr.__version__) < version.parse('0.4.1'):
+            from mmdet.apis import single_gpu_test
+        else:
+            from mmocr.apis import single_gpu_test
         outputs = single_gpu_test(model, data_loader, show, out_dir, **kwargs)
         return outputs
diff --git a/mmdeploy/codebase/mmocr/deploy/text_detection_model.py b/mmdeploy/codebase/mmocr/deploy/text_detection_model.py
index 4b9b4ec99b..31861b66e4 100644
--- a/mmdeploy/codebase/mmocr/deploy/text_detection_model.py
+++ b/mmdeploy/codebase/mmocr/deploy/text_detection_model.py
@@ -118,7 +118,7 @@ def forward_test(self, imgs: torch.Tensor, *args, **kwargs) -> \
     def show_result(self,
                     img: np.ndarray,
                     result: dict,
-                    win_name: str,
+                    win_name: str = '',
                     show: bool = True,
                     score_thr: float = 0.3,
                     out_file: str = None):
diff --git a/mmdeploy/codebase/mmocr/deploy/text_recognition_model.py b/mmdeploy/codebase/mmocr/deploy/text_recognition_model.py
index 42e88f2235..7f07dbba63 100644
--- a/mmdeploy/codebase/mmocr/deploy/text_recognition_model.py
+++ b/mmdeploy/codebase/mmocr/deploy/text_recognition_model.py
@@ -125,7 +125,7 @@ def forward_test(self, imgs: torch.Tensor,
     def show_result(self,
                     img: np.ndarray,
                     result: list,
-                    win_name: str,
+                    win_name: str = '',
                     show: bool = True,
                     score_thr: float = 0.3,
                     out_file: str = None):