diff --git a/__init__.py b/__init__.py
index 829f0d7..f2d60ea 100644
--- a/__init__.py
+++ b/__init__.py
@@ -91,8 +91,7 @@ class FaceDetect:
         image, image_selected, cls, prob, nums, period = test_node(image, length=length, thres=threshold, model_name=model)
         print("全部帧序列", period)
         if len(period) > 0:
-            random.seed(main_seed)
-            start, end = random.choice(period)
+            start, end = period[main_seed % len(period)]
             config = {"start": start, "end": end}
         else:
             config = {}