diff --git a/python/rapidocr_openvino/config.yaml b/python/rapidocr_openvino/config.yaml
index 3bd206126..81aee2083 100644
--- a/python/rapidocr_openvino/config.yaml
+++ b/python/rapidocr_openvino/config.yaml
@@ -7,8 +7,14 @@ Global:
     min_height: 30
     width_height_ratio: 8
 
+    use_cuda: &use_cuda false
+
+    inference_num_threads: &infer_num_threads -1
+
 Det:
-    use_cuda: false
+    inference_num_threads: *infer_num_threads
+
+    use_cuda: *use_cuda
 
     model_path: models/ch_PP-OCRv4_det_infer.onnx
 
@@ -23,7 +29,9 @@ Det:
     score_mode: fast
 
 Cls:
-    use_cuda: false
+    inference_num_threads: *infer_num_threads
+
+    use_cuda: *use_cuda
 
     model_path: models/ch_ppocr_mobile_v2.0_cls_infer.onnx
 
@@ -33,7 +41,9 @@ Cls:
     label_list: ['0', '180']
 
 Rec:
-    use_cuda: false
+    inference_num_threads: *infer_num_threads
+
+    use_cuda: *use_cuda
 
     model_path: models/ch_PP-OCRv4_rec_infer.onnx
 
diff --git a/python/rapidocr_openvino/utils.py b/python/rapidocr_openvino/utils.py
index 21d6c3b76..ad2090da2 100644
--- a/python/rapidocr_openvino/utils.py
+++ b/python/rapidocr_openvino/utils.py
@@ -3,6 +3,7 @@
 # @Contact: liekkaskono@163.com
 import argparse
 import math
+import os
 import random
 from io import BytesIO
 from pathlib import Path
@@ -20,11 +21,17 @@
 
 class OpenVINOInferSession:
     def __init__(self, config):
-        ie = Core()
+        core = Core()
 
         self._verify_model(config["model_path"])
-        model_onnx = ie.read_model(config["model_path"])
-        compile_model = ie.compile_model(model=model_onnx, device_name="CPU")
+        model_onnx = core.read_model(config["model_path"])
+
+        cpu_nums = os.cpu_count()
+        infer_num_threads = config.get("inference_num_threads", -1)
+        if infer_num_threads != -1 and 1 <= infer_num_threads <= cpu_nums:
+            core.set_property("CPU", {"INFERENCE_NUM_THREADS": str(infer_num_threads)})
+
+        compile_model = core.compile_model(model=model_onnx, device_name="CPU")
         self.session = compile_model.create_infer_request()
 
     def __call__(self, input_content: np.ndarray) -> np.ndarray:
diff --git a/python/rapidocr_paddle/config.yaml b/python/rapidocr_paddle/config.yaml
index 3ed6a4620..c30b4fda4 100644
--- a/python/rapidocr_paddle/config.yaml
+++ b/python/rapidocr_paddle/config.yaml
@@ -7,10 +7,18 @@ Global:
     min_height: 30
     width_height_ratio: 8
 
+    use_cuda: &use_cuda false
+    gpu_id: &gpu_id 0
+    gpu_mem: &gpu_mem 500
+
+    cpu_math_library_num_threads: &infer_num_threads -1
+
 Det:
-    use_cuda: false
-    gpu_id: 0
-    gpu_mem: 500
+    use_cuda: *use_cuda
+    gpu_id: *gpu_id
+    gpu_mem: *gpu_mem
+
+    cpu_math_library_num_threads: *infer_num_threads
 
     model_path: models/ch_PP-OCRv4_det_infer
 
@@ -25,9 +33,11 @@ Det:
     score_mode: fast
 
 Cls:
-    use_cuda: false
-    gpu_id: 0
-    gpu_mem: 500
+    use_cuda: *use_cuda
+    gpu_id: *gpu_id
+    gpu_mem: *gpu_mem
+
+    cpu_math_library_num_threads: *infer_num_threads
 
     model_path: models/ch_ppocr_mobile_v2_cls_infer
 
@@ -37,9 +47,11 @@ Cls:
     label_list: ['0', '180']
 
 Rec:
-    use_cuda: false
-    gpu_id: 0
-    gpu_mem: 500
+    use_cuda: *use_cuda
+    gpu_id: *gpu_id
+    gpu_mem: *gpu_mem
+
+    cpu_math_library_num_threads: *infer_num_threads
 
     model_path: models/ch_PP-OCRv4_rec_infer
 
diff --git a/python/rapidocr_paddle/utils.py b/python/rapidocr_paddle/utils.py
index 6169da12e..cc4a33935 100644
--- a/python/rapidocr_paddle/utils.py
+++ b/python/rapidocr_paddle/utils.py
@@ -45,6 +45,11 @@ def __init__(self, config, mode: Optional[str] = None) -> None:
         else:
             infer_opts.disable_gpu()
 
+        cpu_nums = os.cpu_count()
+        infer_num_threads = config.get("cpu_math_library_num_threads", -1)
+        if infer_num_threads != -1 and 1 <= infer_num_threads <= cpu_nums:
+            infer_opts.set_cpu_math_library_num_threads(infer_num_threads)
+
         # enable memory optim
         infer_opts.enable_memory_optim()
         infer_opts.disable_glog_info()