diff --git a/src/core/glint_removal/SUGAR.py b/src/core/glint_removal/SUGAR.py
index 3faf182..014308b 100644
--- a/src/core/glint_removal/SUGAR.py
+++ b/src/core/glint_removal/SUGAR.py
@@ -328,7 +328,8 @@ class SUGAR:
                 self.R_bg_glint_all.append(np.concatenate(R_bg_glint_list[b]))
                 n = len(self.R_glint_all[b])
                 print(f"  波段{b}: 收集到 {n} 个glint像素")
-                del R_glint_list[b], R_bg_glint_list[b]
+                R_glint_list[b] = None
+                R_bg_glint_list[b] = None
 
     def _optimize_b_list(self):
         """