diff --git a/mall-shop/src/main/java/com/suisung/mall/shop/activity/service/ShopActivityCutpriceService.java b/mall-shop/src/main/java/com/suisung/mall/shop/activity/service/ShopActivityCutpriceService.java
index 7c01ae50..fc346813 100644
--- a/mall-shop/src/main/java/com/suisung/mall/shop/activity/service/ShopActivityCutpriceService.java
+++ b/mall-shop/src/main/java/com/suisung/mall/shop/activity/service/ShopActivityCutpriceService.java
@@ -4,6 +4,7 @@ import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
 import com.suisung.mall.common.api.CommonResult;
 import com.suisung.mall.common.modules.activity.ShopActivityCutprice;
 import com.suisung.mall.core.web.service.IBaseService;
+import org.springframework.data.util.Pair;
 
 import java.util.Map;
 
@@ -28,4 +29,13 @@ public interface ShopActivityCutpriceService extends IBaseService<ShopActivityCu
 
     CommonResult doCutPrice(Integer ac_id, Integer user_id);
 
+    /**
+     * 砍价活动是否可以下单
+     *
+     * @param ac_id         活动 自增Id
+     * @param order_user_id 下单用户
+     * @return
+     */
+    Pair<Boolean, String> canDoOrderCutPriceActivity(Integer ac_id, Integer order_user_id);
+
 }
diff --git a/mall-shop/src/main/java/com/suisung/mall/shop/activity/service/impl/ShopActivityCutpriceServiceImpl.java b/mall-shop/src/main/java/com/suisung/mall/shop/activity/service/impl/ShopActivityCutpriceServiceImpl.java
index 6c68b65a..8d7460be 100644
--- a/mall-shop/src/main/java/com/suisung/mall/shop/activity/service/impl/ShopActivityCutpriceServiceImpl.java
+++ b/mall-shop/src/main/java/com/suisung/mall/shop/activity/service/impl/ShopActivityCutpriceServiceImpl.java
@@ -35,6 +35,7 @@ import com.suisung.mall.shop.base.service.AccountBaseConfigService;
 import com.suisung.mall.shop.store.service.ShopStoreActivityBaseService;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.context.annotation.Lazy;
+import org.springframework.data.util.Pair;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
@@ -397,4 +398,41 @@ public class ShopActivityCutpriceServiceImpl extends BaseServiceImpl<ShopActivit
         return CommonResult.success(ach_data);
     }
 
+    /**
+     * 砍价活动是否可以下单
+     *
+     * @param activity_id   活动 Id
+     * @param order_user_id 下单用户
+     *                      <p>
+     *                      判断逻辑：
+     *                      1、活动是否过期
+     *                      2、活动是否是下单用户的
+     *                      3、活动是否是砍到最低价
+     * @return
+     */
+    @Override
+    public Pair<Boolean, String> canDoOrderCutPriceActivity(Integer activity_id, Integer order_user_id) {
+        QueryWrapper<ShopStoreActivityBase> params = new QueryWrapper<>();
+        params.eq("activity_id", activity_id);
+        ShopStoreActivityBase storeActivityBase = shopStoreActivityBaseService.getOne(params);
+        if (storeActivityBase == null) {
+            return Pair.of(false, I18nUtil._("该活动不存在！"));
+        }
+
+        if (!shopStoreActivityBaseService.isActivityTimeValid(storeActivityBase.getActivity_starttime(), storeActivityBase.getActivity_endtime())) {
+            return Pair.of(false, I18nUtil._("该活动已过期！"));
+        }
+
+        QueryWrapper<ShopActivityCutprice> queryWrapper = new QueryWrapper<>();
+        queryWrapper.eq("activity_id", activity_id);
+        queryWrapper.eq("user_id", order_user_id);
+        queryWrapper.orderByDesc("ac_id");
+        ShopActivityCutprice shopActivityCutprice = getOne(queryWrapper);
+        if (shopActivityCutprice == null) {
+            return Pair.of(false, I18nUtil._("未找到用户发起的砍价活动！"));
+        }
+
+        return null;
+    }
+
 }
diff --git a/mall-shop/src/main/java/com/suisung/mall/shop/order/service/impl/ShopOrderInfoServiceImpl.java b/mall-shop/src/main/java/com/suisung/mall/shop/order/service/impl/ShopOrderInfoServiceImpl.java
index f48b07d2..5b86dfd9 100644
--- a/mall-shop/src/main/java/com/suisung/mall/shop/order/service/impl/ShopOrderInfoServiceImpl.java
+++ b/mall-shop/src/main/java/com/suisung/mall/shop/order/service/impl/ShopOrderInfoServiceImpl.java
@@ -1155,13 +1155,13 @@ public class ShopOrderInfoServiceImpl extends BaseServiceImpl<ShopOrderInfoMappe
             }
 
             // 时间槽间隔（分钟）
-            int slotInterval = 30;
+            int slotInterval = 15;
 
             // 对于今天，需要特殊处理：第二个时间槽从当前时间+50分钟开始
             Date startTime = openTime;
             if (isToday) {
                 // 当前时间+50分钟作为第二个时间槽的开始时间
-                Date nowPlusFifty = DateUtil.offsetMinute(new Date(), 50);
+                Date nowPlusFifty = DateUtil.offsetMinute(new Date(), 35);
 
                 // 如果当前时间+50分钟在营业时间范围内，则从该时间开始
                 if (nowPlusFifty.after(openTime) && nowPlusFifty.before(closeTime)) {
diff --git a/mall-shop/src/main/java/com/suisung/mall/shop/store/service/ShopStoreActivityBaseService.java b/mall-shop/src/main/java/com/suisung/mall/shop/store/service/ShopStoreActivityBaseService.java
index b2c1f243..970db688 100644
--- a/mall-shop/src/main/java/com/suisung/mall/shop/store/service/ShopStoreActivityBaseService.java
+++ b/mall-shop/src/main/java/com/suisung/mall/shop/store/service/ShopStoreActivityBaseService.java
@@ -10,6 +10,7 @@ import com.suisung.mall.core.web.service.IBaseService;
 import com.suisung.mall.shop.product.pojo.vo.ProductVo;
 
 import java.math.BigDecimal;
+import java.util.Date;
 import java.util.List;
 import java.util.Map;
 
@@ -58,6 +59,15 @@ public interface ShopStoreActivityBaseService extends IBaseService<ShopStoreActi
     List<Long> getActivityAllItemIds(Map activity_row);
 
     boolean isActivityTimeValid(Map activity_row);
+    
+    /**
+     * 验证活动时间是否有效
+     *
+     * @param starTime 活动开始时间
+     * @param endTime  活动结束时间
+     * @return 时间是否有效
+     */
+    boolean isActivityTimeValid(Date starTime, Date endTime);
 
     Map listsMarketing();
 
@@ -169,4 +179,6 @@ public interface ShopStoreActivityBaseService extends IBaseService<ShopStoreActi
      * @return
      */
     Map getGiftbag(Integer activity_id);
+
+
 }
diff --git a/mall-shop/src/main/java/com/suisung/mall/shop/store/service/impl/ShopStoreActivityBaseServiceImpl.java b/mall-shop/src/main/java/com/suisung/mall/shop/store/service/impl/ShopStoreActivityBaseServiceImpl.java
index 3008adcb..99185587 100644
--- a/mall-shop/src/main/java/com/suisung/mall/shop/store/service/impl/ShopStoreActivityBaseServiceImpl.java
+++ b/mall-shop/src/main/java/com/suisung/mall/shop/store/service/impl/ShopStoreActivityBaseServiceImpl.java
@@ -2055,6 +2055,7 @@ public class ShopStoreActivityBaseServiceImpl extends BaseServiceImpl<ShopStoreA
      * @param activityRow 活动数据
      * @return 时间是否有效
      */
+    @Override
     public boolean isActivityTimeValid(Map activityRow) {
         if (CollUtil.isEmpty(activityRow)) {
             return false;
@@ -2078,6 +2079,23 @@ public class ShopStoreActivityBaseServiceImpl extends BaseServiceImpl<ShopStoreA
         return !now.before(startTime) && !now.after(endTime);
     }
 
+    /**
+     * 验证活动时间是否有效
+     *
+     * @param starTime 活动开始时间
+     * @param endTime  活动结束时间
+     * @return 时间是否有效
+     */
+    @Override
+    public boolean isActivityTimeValid(Date starTime, Date endTime) {
+        if (starTime == null || endTime == null) {
+            return false;
+        }
+
+        Date now = new Date();
+        return !now.before(starTime) && !now.after(endTime);
+    }
+
     @Override
     public Map listsMarketing() {
         Integer page = Convert.toInt(getParameter("page"), 1);