diff --git a/docs/api_docs/python/ocr.md b/docs/api_docs/python/ocr.md
index a197263d5..8b071b454 100644
--- a/docs/api_docs/python/ocr.md
+++ b/docs/api_docs/python/ocr.md
@@ -1,5 +1,22 @@
 # OCR(文字识别)
 
+## fastdeploy.vision.ocr.DBDetectorPreprocessor
+
+```{eval-rst}
+.. autoclass:: fastdeploy.vision.ocr.DBDetectorPreprocessor
+    :members:
+    :inherited-members:
+```
+
+## fastdeploy.vision.ocr.DBDetectorPostprocessor
+
+```{eval-rst}
+.. autoclass:: fastdeploy.vision.ocr.DBDetectorPostprocessor
+    :members:
+    :inherited-members:
+```
+
+
 ## fastdeploy.vision.ocr.DBDetector
 
 ```{eval-rst}
@@ -8,6 +25,22 @@
     :inherited-members:
 ```
 
+## fastdeploy.vision.ocr.ClassifierPreprocessor
+
+```{eval-rst}
+.. autoclass:: fastdeploy.vision.ocr.ClassifierPreprocessor
+    :members:
+    :inherited-members:
+```
+
+## fastdeploy.vision.ocr.ClassifierPostprocessor
+
+```{eval-rst}
+.. autoclass:: fastdeploy.vision.ocr.ClassifierPostprocessor
+    :members:
+    :inherited-members:
+```
+
 ## fastdeploy.vision.ocr.Classifier
 
 ```{eval-rst}
@@ -16,6 +49,23 @@
     :inherited-members:
 ```
 
+
+## fastdeploy.vision.ocr.RecognizerPreprocessor
+
+```{eval-rst}
+.. autoclass:: fastdeploy.vision.ocr.RecognizerPreprocessor
+    :members:
+    :inherited-members:
+```
+
+## fastdeploy.vision.ocr.RecognizerPostprocessor
+
+```{eval-rst}
+.. autoclass:: fastdeploy.vision.ocr.RecognizerPostprocessor
+    :members:
+    :inherited-members:
+```
+
 ## fastdeploy.vision.ocr.Recognizer
 
 ```{eval-rst}
diff --git a/python/fastdeploy/vision/ocr/ppocr/__init__.py b/python/fastdeploy/vision/ocr/ppocr/__init__.py
index e19fb686e..403f70aa7 100755
--- a/python/fastdeploy/vision/ocr/ppocr/__init__.py
+++ b/python/fastdeploy/vision/ocr/ppocr/__init__.py
@@ -24,12 +24,14 @@ def sort_boxes(boxes):
 
 class DBDetectorPreprocessor:
     def __init__(self):
-        """Create a preprocessor for DBDetectorModel
+        """
+        Create a preprocessor for DBDetectorModel
         """
         self._preprocessor = C.vision.ocr.DBDetectorPreprocessor()
 
     def run(self, input_ims):
         """Preprocess input images for DBDetectorModel
+
         :param: input_ims: (list of numpy.ndarray) The input image
         :return: pair(list of FDTensor, list of std::array<int, 4>)
         """
@@ -66,12 +68,14 @@ class DBDetectorPreprocessor:
 
 class DBDetectorPostprocessor:
     def __init__(self):
-        """Create a postprocessor for DBDetectorModel
+        """
+        Create a postprocessor for DBDetectorModel
         """
         self._postprocessor = C.vision.ocr.DBDetectorPostprocessor()
 
     def run(self, runtime_results, batch_det_img_info):
         """Postprocess the runtime results for DBDetectorModel
+
         :param: runtime_results: (list of FDTensor or list of pyArray)The output FDTensor results from runtime
         :param: batch_det_img_info: (list of std::array<int, 4>)The output of det_preprocessor
         :return: list of Result(If the runtime_results is predict by batched samples, the length of this list equals to the batch size)
@@ -80,10 +84,17 @@ class DBDetectorPostprocessor:
 
     @property
     def det_db_thresh(self):
+        """
+        Return the det_db_thresh of DBDetectorPostprocessor
+        """
         return self._postprocessor.det_db_thresh
 
     @det_db_thresh.setter
     def det_db_thresh(self, value):
+        """Set the det_db_thresh for DBDetectorPostprocessor
+
+        :param: value : the det_db_thresh value
+        """
         assert isinstance(
             value,
             float), "The value to set `det_db_thresh` must be type of float."
@@ -91,10 +102,17 @@ class DBDetectorPostprocessor:
 
     @property
     def det_db_box_thresh(self):
+        """
+        Return the det_db_box_thresh of DBDetectorPostprocessor
+        """
         return self._postprocessor.det_db_box_thresh
 
     @det_db_box_thresh.setter
     def det_db_box_thresh(self, value):
+        """Set the det_db_box_thresh for DBDetectorPostprocessor
+
+        :param: value : the det_db_box_thresh value
+        """
         assert isinstance(
             value, float
         ), "The value to set `det_db_box_thresh` must be type of float."
@@ -102,10 +120,17 @@ class DBDetectorPostprocessor:
 
     @property
     def det_db_unclip_ratio(self):
+        """
+        Return the det_db_unclip_ratio of DBDetectorPostprocessor
+        """
         return self._postprocessor.det_db_unclip_ratio
 
     @det_db_unclip_ratio.setter
     def det_db_unclip_ratio(self, value):
+        """Set the det_db_unclip_ratio for DBDetectorPostprocessor
+
+        :param: value : the det_db_unclip_ratio value
+        """
         assert isinstance(
             value, float
         ), "The value to set `det_db_unclip_ratio` must be type of float."
@@ -113,10 +138,17 @@ class DBDetectorPostprocessor:
 
     @property
     def det_db_score_mode(self):
+        """
+        Return the det_db_score_mode of DBDetectorPostprocessor
+        """
         return self._postprocessor.det_db_score_mode
 
     @det_db_score_mode.setter
     def det_db_score_mode(self, value):
+        """Set the det_db_score_mode for DBDetectorPostprocessor
+
+        :param: value : the det_db_score_mode value
+        """
         assert isinstance(
             value,
             str), "The value to set `det_db_score_mode` must be type of str."
@@ -124,10 +156,17 @@ class DBDetectorPostprocessor:
 
     @property
     def use_dilation(self):
+        """
+        Return the use_dilation of DBDetectorPostprocessor
+        """
         return self._postprocessor.use_dilation
 
     @use_dilation.setter
     def use_dilation(self, value):
+        """Set the use_dilation for DBDetectorPostprocessor
+
+        :param: value : the use_dilation value
+        """
         assert isinstance(
             value,
             bool), "The value to set `use_dilation` must be type of bool."
@@ -160,6 +199,7 @@ class DBDetector(FastDeployModel):
 
     def clone(self):
         """Clone OCR detection model object
+
         :return: a new OCR detection model object
         """
 
@@ -334,10 +374,17 @@ class ClassifierPostprocessor:
 
     @property
     def cls_thresh(self):
+        """
+        Return the cls_thresh of ClassifierPostprocessor
+        """
         return self._postprocessor.cls_thresh
 
     @cls_thresh.setter
     def cls_thresh(self, value):
+        """Set the cls_thresh for ClassifierPostprocessor
+
+        :param: value: the value of cls_thresh
+        """
         assert isinstance(
             value,
             float), "The value to set `cls_thresh` must be type of float."