diff --git a/src/infer_det.py b/src/infer_det.py
index b90a1c8..00baf9e 100644
--- a/src/infer_det.py
+++ b/src/infer_det.py
@@ -3,7 +3,7 @@ import argparse
 import glob
 import subprocess
 
-from onnxruntime import InferenceSession
+import onnxruntime
 from pathlib import Path
 
 from models.det_model.inference import PredictConfig, predict_image
@@ -17,6 +17,7 @@ parser.add_argument('--onnx_file', type=str, help="onnx model file path",
 parser.add_argument("--image_dir", type=str, default='./testImgs')
 parser.add_argument("--image_file", type=str)
 parser.add_argument("--imgsave_dir", type=str, default="./detect_results")
+parser.add_argument('--use_gpu', action='store_true', help='Whether to use GPU for inference', default=True)
 
 
 def get_test_images(infer_dir, infer_img):
@@ -71,8 +72,11 @@ if __name__ == '__main__':
     
     # load image list
     img_list = get_test_images(FLAGS.image_dir, FLAGS.image_file)
-    # load predictor
-    predictor = InferenceSession(FLAGS.onnx_file)
+
+    if FLAGS.use_gpu:
+        predictor = onnxruntime.InferenceSession(FLAGS.onnx_file, providers=['CUDAExecutionProvider'])
+    else:
+        predictor = onnxruntime.InferenceSession(FLAGS.onnx_file, providers=['CPUExecutionProvider'])
     # load infer config
     infer_config = PredictConfig(FLAGS.infer_cfg)