diff --git a/web-infrastructure/src/main/java/com/zcloud/edu/persistence/repository/impl/study/ClassRepositoryImpl.java b/web-infrastructure/src/main/java/com/zcloud/edu/persistence/repository/impl/study/ClassRepositoryImpl.java
index 7c465e2..43a9fb5 100644
--- a/web-infrastructure/src/main/java/com/zcloud/edu/persistence/repository/impl/study/ClassRepositoryImpl.java
+++ b/web-infrastructure/src/main/java/com/zcloud/edu/persistence/repository/impl/study/ClassRepositoryImpl.java
@@ -38,15 +38,15 @@ public class ClassRepositoryImpl extends BaseRepositoryImpl<ClassMapper, ClassDO
         if(params.get("eqState")!=null && params.get("eqState").toString().equals("2")){
 
             params.put("eqState",2);
-            params.put("ltStartTime", DateUtil.getTime());
+            params.put("gtStartTime", DateUtil.getTime());
         }else if(params.get("eqState")!=null && params.get("eqState").toString().equals("3")){
             params.put("eqState",2);
-            params.put("gtStartTime", DateUtil.getTime());
-            params.put("ltEndTime", DateUtil.getTime());
+            params.put("ltStartTime", DateUtil.getTime());
+            params.put("gtEndTime", DateUtil.getTime());
         }else if(params.get("eqState")!=null && params.get("eqState").toString().equals("4")){
             // `ge`: 大于等于比较查询 le`: 小于等于比较查询   * - `gt`: 大于比较查询  `lt`: 小于比较查询
             params.put("eqState",2);
-            params.put("gtEndTime", DateUtil.getTime());
+            params.put("ltEndTime", DateUtil.getTime());
         }
 
         QueryWrapper<ClassDO> queryWrapper = new QueryWrapper<>();