diff --git a/app/service/generate_image/utils/image_processing.py b/app/service/generate_image/utils/image_processing.py
index aeebffd..d4f5974 100644
--- a/app/service/generate_image/utils/image_processing.py
+++ b/app/service/generate_image/utils/image_processing.py
@@ -167,7 +167,7 @@ def stain_detection(image, spot_size=100):
     # 寻找轮廓
     contours, _ = cv2.findContours(thresh, cv2.RETR_EXTERNAL, cv2.CHAIN_APPROX_SIMPLE)
     # 过滤非连续的纯白区域
-    filtered_contours = [cnt for cnt in contours if cv2.contourArea(cnt) >= 30]  # 根据面积进行过滤，这里假设面积大于30的为连续区域
+    filtered_contours = [cnt for cnt in contours if cv2.contourArea(cnt) >= 300]  # 根据面积进行过滤，这里假设面积大于30的为连续区域
     # 如果有连续的纯白区域存在
     if filtered_contours:
         # 将纯白区域替换为灰色