diff --git a/src/main/java/com/example/caseData/controller/CaseExchangeController.java b/src/main/java/com/example/caseData/controller/CaseExchangeController.java
index ea6c352..e8adc29 100644
--- a/src/main/java/com/example/caseData/controller/CaseExchangeController.java
+++ b/src/main/java/com/example/caseData/controller/CaseExchangeController.java
@@ -249,36 +249,39 @@ public class CaseExchangeController {
             }
         }
 
-        // 过期状态
-        if (g.getCaseExchangeVote().getEndTime().isAfter(LocalDateTime.now())) {
-            g.getCaseExchangeVote().setIsEnabled(1);
-        }else{
-            g.getCaseExchangeVote().setIsEnabled(0);
-        }
-
-        // 用户投票状态
-        if (userId != null) {
-            LambdaQueryWrapper<UserVoteExchangeModel> queryWrapper = new LambdaQueryWrapper<>();
-            queryWrapper.eq(UserVoteExchangeModel::getUserId, userId);
-            queryWrapper.eq(UserVoteExchangeModel::getExchangeId, exchangeId);
-            queryWrapper.eq(UserVoteExchangeModel::getVoteId, g.getCaseExchangeVote().getVoteId());
-            UserVoteExchangeModel userVoteExchange = userVoteExchangeDao.selectOne(queryWrapper);
-            if (userVoteExchange != null) {
-                // 已投过票
+        // 处理投票数据
+        if (g.getCaseExchangeVote() != null){
+            if (g.getCaseExchangeVote().getEndTime().isAfter(LocalDateTime.now())) {
+                g.getCaseExchangeVote().setIsEnabled(1);
+            }else{
                 g.getCaseExchangeVote().setIsEnabled(0);
             }
+
+            // 用户投票状态
+            if (userId != null) {
+                LambdaQueryWrapper<UserVoteExchangeModel> queryWrapper = new LambdaQueryWrapper<>();
+                queryWrapper.eq(UserVoteExchangeModel::getUserId, userId);
+                queryWrapper.eq(UserVoteExchangeModel::getExchangeId, exchangeId);
+                queryWrapper.eq(UserVoteExchangeModel::getVoteId, g.getCaseExchangeVote().getVoteId());
+                UserVoteExchangeModel userVoteExchange = userVoteExchangeDao.selectOne(queryWrapper);
+                if (userVoteExchange != null) {
+                    // 已投过票
+                    g.getCaseExchangeVote().setIsEnabled(0);
+                }
+            }
+
+            // 处理投票数据
+            Integer voteNum = 0;
+            for (CaseExchangeVoteOptionDto dto : g.getCaseExchangeVote().getCaseExchangeVoteOption()){
+                voteNum += dto.getVoteNum();
+            }
+
+            for (CaseExchangeVoteOptionDto dto : g.getCaseExchangeVote().getCaseExchangeVoteOption()){
+                Integer proportion = (int) (Math.round((double) dto.getVoteNum() / voteNum * 10000) / 100.0);
+                dto.setProportion(proportion);
+            }
         }
 
-        // 处理投票数据
-        Integer voteNum = 0;
-        for (CaseExchangeVoteOptionDto dto : g.getCaseExchangeVote().getCaseExchangeVoteOption()){
-            voteNum += dto.getVoteNum();
-        }
-
-        for (CaseExchangeVoteOptionDto dto : g.getCaseExchangeVote().getCaseExchangeVoteOption()){
-            Integer proportion = (int) (Math.round((double) dto.getVoteNum() / voteNum * 10000) / 100.0);
-            dto.setProportion(proportion);
-        }
 
         return Response.success(g);
     }