diff --git a/src/main/java/com/biutag/supervision/pojo/dto/complaintCollection/ComplaintCollectionPageDTO.java b/src/main/java/com/biutag/supervision/pojo/dto/complaintCollection/ComplaintCollectionPageDTO.java
index 52a57b5..9017ed6 100644
--- a/src/main/java/com/biutag/supervision/pojo/dto/complaintCollection/ComplaintCollectionPageDTO.java
+++ b/src/main/java/com/biutag/supervision/pojo/dto/complaintCollection/ComplaintCollectionPageDTO.java
@@ -165,6 +165,12 @@ public class ComplaintCollectionPageDTO {
     @Schema(description = "涉及单位")
     private String involveDepartName;
 
+    @Schema(description = "办理单位二级名称")
+    private String handleSecondDepartName;
+
+    @Schema(description = "办理单位三级名称")
+    private String handleThreeDepartName;
+
     @Schema(description = "接访领导姓名")
     private String receivingLeaderName;
 
diff --git a/src/main/java/com/biutag/supervision/pojo/param/ComplaintCollection/ComplaintCollectionQueryParam.java b/src/main/java/com/biutag/supervision/pojo/param/ComplaintCollection/ComplaintCollectionQueryParam.java
index d1163a9..01d443a 100644
--- a/src/main/java/com/biutag/supervision/pojo/param/ComplaintCollection/ComplaintCollectionQueryParam.java
+++ b/src/main/java/com/biutag/supervision/pojo/param/ComplaintCollection/ComplaintCollectionQueryParam.java
@@ -133,6 +133,9 @@ public class ComplaintCollectionQueryParam extends BasePage {
     @Schema(description = "阶段2同步标记")
     private String blameSyncStatus;
 
+    @Schema(description = "办理单位ID集合（包含所有子节点）")
+    private Set<String> handleDepartIds;
+
 //    @Schema(description = "部门ID集合")
 //    private Set<String> secondDepartIds;
 
diff --git a/src/main/java/com/biutag/supervision/pojo/request/complaintCollection/ComplaintCollectionPageRequest.java b/src/main/java/com/biutag/supervision/pojo/request/complaintCollection/ComplaintCollectionPageRequest.java
index f1e279a..e85746a 100644
--- a/src/main/java/com/biutag/supervision/pojo/request/complaintCollection/ComplaintCollectionPageRequest.java
+++ b/src/main/java/com/biutag/supervision/pojo/request/complaintCollection/ComplaintCollectionPageRequest.java
@@ -90,6 +90,9 @@ public class ComplaintCollectionPageRequest extends BasePage implements ParamChe
     @JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss")
     private List<LocalDateTime> createTimeList =  new ArrayList<>();
 
+    @Schema(description = "办理单位ID")
+    private String handleDepartId;
+
 
     @Override
     public void check() {
diff --git a/src/main/java/com/biutag/supervision/service/complaintCollection/ComplaintCollectionServiceImpl.java b/src/main/java/com/biutag/supervision/service/complaintCollection/ComplaintCollectionServiceImpl.java
index eec5774..bcc0f59 100644
--- a/src/main/java/com/biutag/supervision/service/complaintCollection/ComplaintCollectionServiceImpl.java
+++ b/src/main/java/com/biutag/supervision/service/complaintCollection/ComplaintCollectionServiceImpl.java
@@ -296,6 +296,13 @@ public class ComplaintCollectionServiceImpl implements ComplaintCollectionServic
                 }
             }
         }
+        // 办理单位：获取所有子节点ID
+        if (StrUtil.isNotBlank(request.getHandleDepartId())) {
+            List<String> allDepartIds = departService.getAllNodeIds(List.of(request.getHandleDepartId()));
+            if (CollectionUtil.isNotEmpty(allDepartIds)) {
+                param.setHandleDepartIds(new HashSet<>(allDepartIds));
+            }
+        }
         // doto 自办信件的只有市局管理员  12377管理员可以看
         Page<ComplaintCollection> page = new Page<>(param.getCurrent(), param.getSize());
         IPage<ComplaintCollectionPageDTO> pageResult = complaintCollectionMapper.selectPageWithNegative(page, param);
diff --git a/src/main/resources/mapper/ComplaintCollectionMapper.xml b/src/main/resources/mapper/ComplaintCollectionMapper.xml
index 772a325..a43c3dc 100644
--- a/src/main/resources/mapper/ComplaintCollectionMapper.xml
+++ b/src/main/resources/mapper/ComplaintCollectionMapper.xml
@@ -221,7 +221,11 @@
         n.check_status_code AS checkStatusCode,
         n.checkStatusName AS checkStatusName,
         n.check_status_desc AS checkStatusDesc,
-        n.involveDepartName AS  involveDepartName
+        n.involveDepartName AS  involveDepartName,
+        n.handle_second_depart_id AS handleSecondDepartId,
+        n.handle_second_depart_name AS handleSecondDepartName,
+        n.handle_three_depart_id AS handleThreeDepartId,
+        n.handle_three_depart_name AS handleThreeDepartName
         FROM complaint_collection cc
         LEFT JOIN negative n ON n.id = cc.negative_id
         <where>
@@ -321,6 +325,18 @@
             <if test="param.createTimeList != null and param.createTimeList.size == 2">
                 AND cc.create_time BETWEEN #{param.createTimeList[0]} AND #{param.createTimeList[1]}
             </if>
+            <if test="param.handleDepartIds != null and param.handleDepartIds.size > 0">
+                AND (
+                    n.handle_second_depart_id IN
+                    <foreach collection="param.handleDepartIds" item="item" open="(" separator="," close=")">
+                        #{item}
+                    </foreach>
+                    OR n.handle_three_depart_id IN
+                    <foreach collection="param.handleDepartIds" item="item" open="(" separator="," close=")">
+                        #{item}
+                    </foreach>
+                )
+            </if>
         </where>
         ORDER BY n.crtTime DESC, cc.id DESC
     </select>