diff --git a/src/main/java/com/gxwebsoft/cms/mapper/xml/CmsArticleMapper.xml b/src/main/java/com/gxwebsoft/cms/mapper/xml/CmsArticleMapper.xml
index b9ce6c3..44b6954 100644
--- a/src/main/java/com/gxwebsoft/cms/mapper/xml/CmsArticleMapper.xml
+++ b/src/main/java/com/gxwebsoft/cms/mapper/xml/CmsArticleMapper.xml
@@ -46,6 +46,12 @@
                 #{item}
               </foreach>
             </if>
+            <if test="param.categoryIdsStr != null and param.categoryIdsStr != ''">
+              AND a.category_id IN
+              <foreach collection="param.categoryIdsStr.split(',')" item="item" separator="," open="(" close=")">
+                #{item}
+              </foreach>
+            </if>
             <if test="param.image != null">
                 AND a.image LIKE CONCAT('%', #{param.image}, '%')
             </if>
diff --git a/src/main/java/com/gxwebsoft/cms/mapper/xml/CmsPageMapper.xml b/src/main/java/com/gxwebsoft/cms/mapper/xml/CmsPageMapper.xml
index 118101f..9d73b14 100644
--- a/src/main/java/com/gxwebsoft/cms/mapper/xml/CmsPageMapper.xml
+++ b/src/main/java/com/gxwebsoft/cms/mapper/xml/CmsPageMapper.xml
@@ -14,6 +14,12 @@
             <if test="param.navigationId != null">
                 AND n.navigation_id = #{param.navigationId}
             </if>
+            <if test="param.navigationIdsStr != null and param.navigationIdsStr != ''">
+                AND n.navigation_id IN
+                <foreach collection="param.navigationIdsStr.split(',')" item="item" open="(" close=")" separator=",">
+                    #{item}
+                </foreach>
+            </if>
             <if test="param.title != null">
                 AND a.title LIKE CONCAT('%', #{param.title}, '%')
             </if>
diff --git a/src/main/java/com/gxwebsoft/cms/param/CmsArticleParam.java b/src/main/java/com/gxwebsoft/cms/param/CmsArticleParam.java
index 5a7d12f..f194096 100644
--- a/src/main/java/com/gxwebsoft/cms/param/CmsArticleParam.java
+++ b/src/main/java/com/gxwebsoft/cms/param/CmsArticleParam.java
@@ -73,6 +73,10 @@ public class CmsArticleParam extends BaseParam {
     @QueryField(type = QueryType.EQ)
     private Integer categoryId;
 
+    @Schema(description = "分类ID集合（逗号分隔字符串），用于聚合父栏目下所有子栏目的文章，由前端递归收集后传入")
+    @TableField(exist = false)
+    private String categoryIdsStr;
+
     @Schema(description = "父级栏目ID")
     @QueryField(type = QueryType.EQ)
     private Integer parentId;
diff --git a/src/main/java/com/gxwebsoft/cms/param/CmsCaseParam.java b/src/main/java/com/gxwebsoft/cms/param/CmsCaseParam.java
index 985fd05..d1f9022 100644
--- a/src/main/java/com/gxwebsoft/cms/param/CmsCaseParam.java
+++ b/src/main/java/com/gxwebsoft/cms/param/CmsCaseParam.java
@@ -38,4 +38,8 @@ public class CmsCaseParam extends BaseParam {
     @Schema(description = "案例分类ID（关联 cms_navigation.navigation_id，model=case）")
     @QueryField(type = QueryType.EQ)
     private Integer categoryId;
+
+    @Schema(description = "案例分类ID集合（逗号分隔），用于聚合父栏目下所有子栏目的案例；优先级高于 categoryId")
+    @QueryField(type = QueryType.IN_STR)
+    private String categoryIds;
 }
diff --git a/src/main/java/com/gxwebsoft/cms/param/CmsPageParam.java b/src/main/java/com/gxwebsoft/cms/param/CmsPageParam.java
index ef2d71e..533d686 100644
--- a/src/main/java/com/gxwebsoft/cms/param/CmsPageParam.java
+++ b/src/main/java/com/gxwebsoft/cms/param/CmsPageParam.java
@@ -54,4 +54,8 @@ public class CmsPageParam extends BaseParam {
     @TableField(exist = false)
     @QueryField(type = QueryType.EQ)
     private Integer navigationId;
+
+    @Schema(description = "导航栏目ID集(逗号分隔)，用于父栏目聚合查询其下所有子栏目的单页")
+    @TableField(exist = false)
+    private String navigationIdsStr;
 }
diff --git a/src/main/java/com/gxwebsoft/cms/param/CmsProductParam.java b/src/main/java/com/gxwebsoft/cms/param/CmsProductParam.java
index 0cecf65..f9de78c 100644
--- a/src/main/java/com/gxwebsoft/cms/param/CmsProductParam.java
+++ b/src/main/java/com/gxwebsoft/cms/param/CmsProductParam.java
@@ -31,6 +31,10 @@ public class CmsProductParam extends BaseParam {
     @QueryField(type = QueryType.EQ)
     private Integer categoryId;
 
+    @Schema(description = "分类ID集合（逗号分隔），用于聚合父栏目下所有子栏目的产品；优先级高于 categoryId")
+    @QueryField(type = QueryType.IN_STR)
+    private String categoryIds;
+
     @Schema(description = "状态: 1在售 0下架")
     @QueryField(type = QueryType.EQ)
     private Integer status;
diff --git a/src/main/java/com/gxwebsoft/cms/service/impl/CmsCaseServiceImpl.java b/src/main/java/com/gxwebsoft/cms/service/impl/CmsCaseServiceImpl.java
index 0f20cd6..6179c26 100644
--- a/src/main/java/com/gxwebsoft/cms/service/impl/CmsCaseServiceImpl.java
+++ b/src/main/java/com/gxwebsoft/cms/service/impl/CmsCaseServiceImpl.java
@@ -25,6 +25,10 @@ public class CmsCaseServiceImpl extends ServiceImpl<CmsCaseMapper, CmsCase> impl
 
     @Override
     public PageResult<CmsCase> pageRel(CmsCaseParam param) {
+        // 聚合场景：传入 categoryIds 时忽略单值 categoryId，避免 AND 冲突
+        if (StrUtil.isNotBlank(param.getCategoryIds())) {
+            param.setCategoryId(null);
+        }
         PageParam<CmsCase, CmsCaseParam> page = new PageParam<>(param);
         page.setDefaultOrder("sort_number asc, create_time desc");
         QueryWrapper<CmsCase> wrapper = page.getWrapper();
diff --git a/src/main/java/com/gxwebsoft/cms/service/impl/CmsProductServiceImpl.java b/src/main/java/com/gxwebsoft/cms/service/impl/CmsProductServiceImpl.java
index a110001..ff9fdf7 100644
--- a/src/main/java/com/gxwebsoft/cms/service/impl/CmsProductServiceImpl.java
+++ b/src/main/java/com/gxwebsoft/cms/service/impl/CmsProductServiceImpl.java
@@ -25,6 +25,10 @@ public class CmsProductServiceImpl extends ServiceImpl<CmsProductMapper, CmsProd
 
     @Override
     public PageResult<CmsProduct> pageRel(CmsProductParam param) {
+        // 聚合场景：传入 categoryIds 时忽略单值 categoryId，避免 AND 冲突
+        if (StrUtil.isNotBlank(param.getCategoryIds())) {
+            param.setCategoryId(null);
+        }
         PageParam<CmsProduct, CmsProductParam> page = new PageParam<>(param);
         page.setDefaultOrder("sort_number asc, create_time desc");
         QueryWrapper<CmsProduct> wrapper = page.getWrapper();