diff --git a/src/main/java/com/project/task/domain/param/TaskParam.java b/src/main/java/com/project/task/domain/param/TaskParam.java
index 072eccb..6e16076 100644
--- a/src/main/java/com/project/task/domain/param/TaskParam.java
+++ b/src/main/java/com/project/task/domain/param/TaskParam.java
@@ -25,4 +25,6 @@ public class TaskParam extends BaseParam {
 
     private Boolean excludeEnd = Boolean.TRUE;
 
+    private Long classicCategoryId;
+
 }
diff --git a/src/main/java/com/project/task/domain/service/impl/SaveOrUpdateTaskDomainServiceImpl.java b/src/main/java/com/project/task/domain/service/impl/SaveOrUpdateTaskDomainServiceImpl.java
index 146b0a8..b779920 100644
--- a/src/main/java/com/project/task/domain/service/impl/SaveOrUpdateTaskDomainServiceImpl.java
+++ b/src/main/java/com/project/task/domain/service/impl/SaveOrUpdateTaskDomainServiceImpl.java
@@ -112,16 +112,25 @@ public class SaveOrUpdateTaskDomainServiceImpl implements SaveOrUpdateTaskDomain
             dto.setBusinessId(subProductLine.getBusinessId());
         }
         // 经典模式：补全分类冗余字段
-        if (ExamModeEnum.CLASSIC.getValue().equals(dto.getExamMode()) && dto.getClassicCategoryId() != null) {
-            ClassicCategoryEntity category = classicCategoryBaseService.getById(dto.getClassicCategoryId());
-            if (category != null) {
-                dto.setClassicCategoryName(category.getName());
-                // 如果是二级分类，补全父级信息
-                if (category.getParentId() != null && category.getParentId() != 0) {
-                    dto.setClassicCategoryParentId(category.getParentId());
-                    ClassicCategoryEntity parentCategory = classicCategoryBaseService.getById(category.getParentId());
-                    if (parentCategory != null) {
-                        dto.setClassicCategoryParentName(parentCategory.getName());
+        if (ExamModeEnum.CLASSIC.getValue().equals(dto.getExamMode())) {
+            // 如果前端没传 classicCategoryId，从套题组推导
+            if (dto.getClassicCategoryId() == null && dto.getClassicPaperSetId() != null) {
+                ClassicPaperSetEntity paperSet = classicPaperSetBaseService.getById(dto.getClassicPaperSetId());
+                if (paperSet != null) {
+                    dto.setClassicCategoryId(paperSet.getClassicCategoryId());
+                }
+            }
+            if (dto.getClassicCategoryId() != null) {
+                ClassicCategoryEntity category = classicCategoryBaseService.getById(dto.getClassicCategoryId());
+                if (category != null) {
+                    dto.setClassicCategoryName(category.getName());
+                    // 如果是二级分类，补全父级信息
+                    if (category.getParentId() != null && category.getParentId() != 0) {
+                        dto.setClassicCategoryParentId(category.getParentId());
+                        ClassicCategoryEntity parentCategory = classicCategoryBaseService.getById(category.getParentId());
+                        if (parentCategory != null) {
+                            dto.setClassicCategoryParentName(parentCategory.getName());
+                        }
                     }
                 }
             }
diff --git a/src/main/java/com/project/task/domain/service/impl/SearchTaskDomainServiceImpl.java b/src/main/java/com/project/task/domain/service/impl/SearchTaskDomainServiceImpl.java
index d1bc44f..0de026e 100644
--- a/src/main/java/com/project/task/domain/service/impl/SearchTaskDomainServiceImpl.java
+++ b/src/main/java/com/project/task/domain/service/impl/SearchTaskDomainServiceImpl.java
@@ -83,6 +83,9 @@ public class SearchTaskDomainServiceImpl implements SearchTaskDomainService {
                 queryWrapper.in(TaskEntity::getSubLineId, productLineEntityList);
             }
         }
+        if (Objects.nonNull(param.getClassicCategoryId())) {
+            queryWrapper.eq(TaskEntity::getClassicCategoryId, param.getClassicCategoryId());
+        }
         // 考试状态过滤
         Date endOfToday = DateUtil.endOfDay(new Date());
         Date beginOfToday = DateUtil.beginOfDay(new Date());
@@ -99,11 +102,6 @@ public class SearchTaskDomainServiceImpl implements SearchTaskDomainService {
             queryWrapper.le(TaskEntity::getStartTime, endOfToday);
             queryWrapper.ge(TaskEntity::getEndTime, beginOfToday);
         }
-        if (BooleanUtil.isTrue(param.getExcludeEnd())) {
-            // 强制要求：结束时间必须 >= 今天 00:00:00
-            // 这样，截止时间是今天的任务会被【保留】，只有昨天及以前截止的任务会被【排除】
-            queryWrapper.ge(TaskEntity::getEndTime, beginOfToday);
-        }
         queryWrapper.orderByDesc(TaskEntity::getId);
         IPage<TaskEntity> taskEntityPage = taskMapper.selectPage(
                 PageConverter.toMpPage(param),