diff --git a/paddlex/ocr_config.yaml b/paddlex/ocr_config.yaml
index 1725f14..e922ef3 100644
--- a/paddlex/ocr_config.yaml
+++ b/paddlex/ocr_config.yaml
@@ -14,3 +14,18 @@ SubModules:
     model_dir: null
     batch_size: 1
     score_thresh: 0
+
+SubPipelines:
+  DocPreprocessor:
+    pipeline_name: doc_preprocessor
+    use_doc_orientation_classify: true
+    use_doc_unwarping: true
+    SubModules:
+      DocOrientationClassify:
+        module_name: doc_text_orientation
+        model_name: PP-LCNet_x1_0_doc_ori
+        model_dir: null
+      DocUnwarping:
+        module_name: image_unwarping
+        model_name: UVDoc
+        model_dir: null