diff --git a/deploy/cpp_infer/include/preprocess_op.h b/deploy/cpp_infer/include/preprocess_op.h
index 5cbc5cd7134238c4f09f536ca6b1153d2d703023..bda7d1230fdc11c3b1a7d99130df755d26895de8 100644
--- a/deploy/cpp_infer/include/preprocess_op.h
+++ b/deploy/cpp_infer/include/preprocess_op.h
@@ -59,7 +59,7 @@ public:
 class ClsResizeImg {
 public:
   virtual void Run(const cv::Mat &img, cv::Mat &resize_img,
-                   const std::vector<int> &rec_image_shape = {3, 32, 320});
+                   const std::vector<int> &rec_image_shape = {3, 48, 192});
 };
 
 } // namespace PaddleOCR
\ No newline at end of file
diff --git a/deploy/cpp_infer/src/ocr_cls.cpp b/deploy/cpp_infer/src/ocr_cls.cpp
index 7cdaaab40108026edffe5cb1ca53ac3972768cc6..0e92fbe54963e4257e92cf529bd8dc5882c1f5dd 100644
--- a/deploy/cpp_infer/src/ocr_cls.cpp
+++ b/deploy/cpp_infer/src/ocr_cls.cpp
@@ -21,7 +21,7 @@ cv::Mat Classifier::Run(cv::Mat &img) {
   img.copyTo(src_img);
   cv::Mat resize_img;
 
-  std::vector<int> rec_image_shape = {3, 32, 100};
+  std::vector<int> rec_image_shape = {3, 48, 192};
   int index = 0;
   float wh_ratio = float(img.cols) / float(img.rows);