diff --git a/face_rec.py b/face_rec.py
index 7a3371d..4abe40c 100644
--- a/face_rec.py
+++ b/face_rec.py
@@ -1836,7 +1836,7 @@ class FaceRecognitionSystem:
                 center_x = w // 2
                 center_y = h // 2
                 # 椭圆参数：中心点、宽半轴、高半轴、旋转角度、起始角度、结束角度
-                cv2.ellipse(display_frame, (center_x, center_y), (180, 240), 0, 0, 360, (0, 200, 0), 2)
+                cv2.ellipse(display_frame, (center_x, center_y), (150, 200), 0, 0, 360, (0, 200, 0), 2)
 
                 # 添加提示文字（使用中文支持函数）
                 guide_text = "请将脸部对准圆圈内"