diff --git a/lottery-system/lottery-service/src/main/java/com/lottery/admin/controller/AdminGradeController.java b/lottery-system/lottery-service/src/main/java/com/lottery/admin/controller/AdminGradeController.java
index e127e02..0663547 100644
--- a/lottery-system/lottery-service/src/main/java/com/lottery/admin/controller/AdminGradeController.java
+++ b/lottery-system/lottery-service/src/main/java/com/lottery/admin/controller/AdminGradeController.java
@@ -86,7 +86,7 @@ public class AdminGradeController {
             return Result.failure("等级已存在，新增失败");
         }
 
-        if (!adminGradeService.saveGrade(gradeDto))  return Result.failure("新增失败");
+        if (!adminGradeService.saveGrade(gradeDto))  return Result.failure("每轮抽取的人数不能大于总数,");
 
         return Result.success();
     }
@@ -109,8 +109,9 @@ public class AdminGradeController {
 
         Grade grade = ConvertBeanUtil.convert(gradeDto, Grade.class);
         grade.setUpdateTime(new Date());
+        grade.setRemainNum(gradeDto.getAmount());
 
-        if (!adminGradeService.updateById(grade))  return Result.failure("修改失败");
+        if (!adminGradeService.updateGradeById(gradeDto))  return Result.failure("每轮抽取人数不能大于总数");
         return Result.success();
     }
 
diff --git a/lottery-system/lottery-service/src/main/java/com/lottery/admin/service/AdminGradeService.java b/lottery-system/lottery-service/src/main/java/com/lottery/admin/service/AdminGradeService.java
index e761379..33f8ba4 100644
--- a/lottery-system/lottery-service/src/main/java/com/lottery/admin/service/AdminGradeService.java
+++ b/lottery-system/lottery-service/src/main/java/com/lottery/admin/service/AdminGradeService.java
@@ -35,6 +35,9 @@ public interface AdminGradeService extends IService<Grade> {
 
     boolean removeGradeById(Long id);
 
+    boolean updateGradeById(GradeDto gradeDto);
+
+
 //    boolean updateGradeById(GradeDto GradeDto);
 
 
diff --git a/lottery-system/lottery-service/src/main/java/com/lottery/admin/service/Impl/AdminGradeServiceImpl.java b/lottery-system/lottery-service/src/main/java/com/lottery/admin/service/Impl/AdminGradeServiceImpl.java
index f8f18e8..866ccf8 100644
--- a/lottery-system/lottery-service/src/main/java/com/lottery/admin/service/Impl/AdminGradeServiceImpl.java
+++ b/lottery-system/lottery-service/src/main/java/com/lottery/admin/service/Impl/AdminGradeServiceImpl.java
@@ -92,6 +92,9 @@ public class AdminGradeServiceImpl extends ServiceImpl<AdminGradeMapper, Grade>
 
     @Override
     public boolean saveGrade(GradeDto gradeDto) {
+        if(gradeDto.getPerWin() > gradeDto.getAmount()){
+            return false;
+        }
 
         Grade grade = ConvertBeanUtil.convert(gradeDto, Grade.class);
         grade.setRemainNum(gradeDto.getAmount());
@@ -107,8 +110,9 @@ public class AdminGradeServiceImpl extends ServiceImpl<AdminGradeMapper, Grade>
     @Override
     @Transactional
     public boolean removeGradeById(Long id) {
-        //把关联的win_record表删了
-        // 1. 查询所有关联的 prizeId（可能多个）
+//        把关联的win_record表删了
+//         1. 查询所有关联的 prizeId（可能多个）
+
         List<Prize> prizes = adminPrizeMapper.selectList(
                 new LambdaQueryWrapper<Prize>()
                         .eq(Prize::getGradeId, id)
@@ -144,18 +148,52 @@ public class AdminGradeServiceImpl extends ServiceImpl<AdminGradeMapper, Grade>
         return true;
     }
 
-//    @Autowired
-//    private AdminGradeMapper adminGradeMapper;
+    @Override
+    public boolean updateGradeById(GradeDto gradeDto) {
+        // 先查询出原始数据
+        Grade originalGrade = this.getById(gradeDto.getId());
+        if (originalGrade == null) {
+            throw new RuntimeException("等级不存在: " + gradeDto.getId());
+        }
+
+        LambdaUpdateWrapper<Grade> gradeLambdaUpdateWrapper = new LambdaUpdateWrapper<>();
+        gradeLambdaUpdateWrapper.eq(Grade::getId, gradeDto.getId());
+
+        // 处理普通字段
+        if (gradeDto.getGradeName() != null) {
+            gradeLambdaUpdateWrapper.set(Grade::getGradeName, gradeDto.getGradeName());
+        }
+        if (gradeDto.getSort() != null) {
+            gradeLambdaUpdateWrapper.set(Grade::getSort, gradeDto.getSort());
+        }
+        if (gradeDto.getPerWin() != null) {
+            if(gradeDto.getPerWin() > gradeDto.getAmount()){
+                return false;
+            }
+        gradeLambdaUpdateWrapper.set(Grade::getPerWin, gradeDto.getPerWin());
+        }
+        // 特殊处理amount字段
+        if (gradeDto.getAmount() != null) {
+            if(gradeDto.getPerWin() > gradeDto.getAmount()){
+                return false;
+            }
+            Integer newTotalAmount = gradeDto.getAmount();
+            Integer originalTotalAmount = originalGrade.getAmount();
+            Integer originalRemaining = originalGrade.getRemainNum();
+
+            // 计算新的剩余量：新总量 - (原总量 - 原剩余量)
+            // 即：newRemaining = newTotal - (originalTotal - originalRemaining)
+            Integer newRemaining = newTotalAmount - (originalTotalAmount - originalRemaining);
+
+            // 确保剩余量不会超过总量也不会小于0
+            newRemaining = Math.max(0, Math.min(newRemaining, newTotalAmount));
+
+            gradeLambdaUpdateWrapper
+                    .set(Grade::getAmount, newTotalAmount)
+                    .set(Grade::getRemainNum, newRemaining);
+        }
+        return this.update(gradeLambdaUpdateWrapper);
+    }
 
 
-//    @Override
-//    public boolean updateGrade(GradeDto gradeDto) {
-//
-//        Grade grade = ConvertBeanUtil.convert(gradeDto,Grade.class);
-//        grade.setUpdateTime(new Date());
-//        if (!(adminGradeMapper.updateById(grade) > 0)) {
-//            return false;
-//        }
-//        return true;
- //   }
 }
diff --git a/lottery-system/lottery-service/src/main/java/com/lottery/admin/service/Impl/AdminPrizeServiceImpl.java b/lottery-system/lottery-service/src/main/java/com/lottery/admin/service/Impl/AdminPrizeServiceImpl.java
index 34d2c9f..1d08ac3 100644
--- a/lottery-system/lottery-service/src/main/java/com/lottery/admin/service/Impl/AdminPrizeServiceImpl.java
+++ b/lottery-system/lottery-service/src/main/java/com/lottery/admin/service/Impl/AdminPrizeServiceImpl.java
@@ -295,7 +295,7 @@ public class AdminPrizeServiceImpl extends ServiceImpl<AdminPrizeMapper, Prize>
     @Override
     public boolean removePrizeById(Long id) {
 
-        //把关联的win_record表删了
+        //把关联的win_record表删了，
         LambdaUpdateWrapper<WinnerRecord> updateWrapper = new LambdaUpdateWrapper<>();
         updateWrapper.eq(WinnerRecord::getPrizeId, id).set(WinnerRecord::getIsDel, 1);
         adminWinMapper.update(null, updateWrapper);
diff --git a/lottery-system/lottery-service/src/main/java/com/lottery/api/service/Impl/UserDetailServiceImpl.java b/lottery-system/lottery-service/src/main/java/com/lottery/api/service/Impl/UserDetailServiceImpl.java
index 07ce305..cc4ff3f 100644
--- a/lottery-system/lottery-service/src/main/java/com/lottery/api/service/Impl/UserDetailServiceImpl.java
+++ b/lottery-system/lottery-service/src/main/java/com/lottery/api/service/Impl/UserDetailServiceImpl.java
@@ -201,6 +201,15 @@ public class UserDetailServiceImpl extends ServiceImpl<IUserDetailMapper, UserDe
             markUsersAsWinners(supplementWinners, startLotteryDto);
         }
 
+        //如果抽奖人数没了
+        if (winners.isEmpty()) {
+            boolean hasNextRound = false;
+            LotteryVo lotteryVo = new LotteryVo();
+            lotteryVo.setData(winners);
+            lotteryVo.setRound(hasNextRound);
+            return lotteryVo;
+        }
+
         //剩余人数
         int lastNum = startLotteryDto.getRemainNum() - winners.size();
         updateRemainNum(grade, lastNum);