diff --git a/skins-service/service-admin/src/main/java/com/ruoyi/admin/service/impl/TtRollServiceImpl.java b/skins-service/service-admin/src/main/java/com/ruoyi/admin/service/impl/TtRollServiceImpl.java
index 0aa81bb..a630810 100644
--- a/skins-service/service-admin/src/main/java/com/ruoyi/admin/service/impl/TtRollServiceImpl.java
+++ b/skins-service/service-admin/src/main/java/com/ruoyi/admin/service/impl/TtRollServiceImpl.java
@@ -167,6 +167,26 @@ public class TtRollServiceImpl extends ServiceImpl<TtRollMapper, TtRoll> impleme
 
         if (ObjectUtil.isEmpty(one)) return AjaxResult.error("不存在的roll房。");
 
+        Date oldEndTime = one.getEndTime();
+
+        // 此刻
+        Calendar c = Calendar.getInstance();
+
+        // 已结束的房间可以随时修改时间，不受任何限制
+        boolean isEnded = c.getTime().compareTo(oldEndTime) >= 0 || !"0".equals(one.getRollStatus());
+        if (!isEnded) {
+            long endTime = ttRoll.getEndTime().getTime();
+            long difference = endTime - c.getTimeInMillis();
+            if (difference < 10) return AjaxResult.error("开奖时间不能早于现在。");
+
+            // 临界区检查（仅对未结束的房间生效）
+            c.add(Calendar.MINUTE, 5);
+            long criticalTime = c.getTimeInMillis();
+            if (criticalTime > oldEndTime.getTime()) {
+                return AjaxResult.error("该roll房开奖时间已处于临界保护区【5分钟】内，请勿修改开奖时间。");
+            }
+        }
+
         baseMapper.updateById(ttRoll);
         return AjaxResult.success();
     }