diff --git a/backend/src/main/java/com/yfd/platform/qgc_base/controller/SdEngInfoBHController.java b/backend/src/main/java/com/yfd/platform/qgc_base/controller/SdEngInfoBHController.java
index feb06ac0..e7687e86 100644
--- a/backend/src/main/java/com/yfd/platform/qgc_base/controller/SdEngInfoBHController.java
+++ b/backend/src/main/java/com/yfd/platform/qgc_base/controller/SdEngInfoBHController.java
@@ -65,8 +65,8 @@ public class SdEngInfoBHController {
 
     @GetMapping("/getByRvcd")
     @Operation(summary = "根据流域编码查询电站")
-    public ResponseResult getByRvcd(@RequestParam String rvcd) {
-        return ResponseResult.successData(engInfoBHService.getByRvcd(rvcd));
+    public ResponseResult getByRvcd(@RequestParam String rvcd, @RequestParam String reachcd) {
+        return ResponseResult.successData(engInfoBHService.getByRvcd(rvcd,reachcd));
     }
 
     @PostMapping("/dropdown")
diff --git a/backend/src/main/java/com/yfd/platform/qgc_base/mapper/SdEngInfoBHMapper.java b/backend/src/main/java/com/yfd/platform/qgc_base/mapper/SdEngInfoBHMapper.java
index 9ce5b3ee..98945a3b 100644
--- a/backend/src/main/java/com/yfd/platform/qgc_base/mapper/SdEngInfoBHMapper.java
+++ b/backend/src/main/java/com/yfd/platform/qgc_base/mapper/SdEngInfoBHMapper.java
@@ -27,7 +27,7 @@ public interface SdEngInfoBHMapper extends BaseMapper<SdEngInfoBH> {
     /**
      * 根据流域编码查询电站列表（通过关联关系）
      */
-    List<SdEngInfoBH> selectByRvcd(@Param("rvcd") String rvcd);
+    List<SdEngInfoBH> selectByRvcd(@Param("rvcd") String rvcd,@Param("reachcd") String reachcd);
 
     /**
      * 根据基地流域编码查询电站列表
diff --git a/backend/src/main/java/com/yfd/platform/qgc_base/service/ISdEngInfoBHService.java b/backend/src/main/java/com/yfd/platform/qgc_base/service/ISdEngInfoBHService.java
index 5a14f586..437a6bbd 100644
--- a/backend/src/main/java/com/yfd/platform/qgc_base/service/ISdEngInfoBHService.java
+++ b/backend/src/main/java/com/yfd/platform/qgc_base/service/ISdEngInfoBHService.java
@@ -37,7 +37,7 @@ public interface ISdEngInfoBHService extends IService<SdEngInfoBH> {
     /**
      * 根据流域编码查询电站
      */
-    List<SdEngInfoBH> getByRvcd(String rvcd);
+    List<SdEngInfoBH> getByRvcd(String rvcd,String reachcd);
 
     /**
      * 电站下拉列表（根据基地编码筛选 + 支持名称模糊搜索）
diff --git a/backend/src/main/java/com/yfd/platform/qgc_base/service/impl/SdEngInfoBHServiceImpl.java b/backend/src/main/java/com/yfd/platform/qgc_base/service/impl/SdEngInfoBHServiceImpl.java
index cf90f151..8cfcdc33 100644
--- a/backend/src/main/java/com/yfd/platform/qgc_base/service/impl/SdEngInfoBHServiceImpl.java
+++ b/backend/src/main/java/com/yfd/platform/qgc_base/service/impl/SdEngInfoBHServiceImpl.java
@@ -76,8 +76,8 @@ public class SdEngInfoBHServiceImpl extends ServiceImpl<SdEngInfoBHMapper, SdEng
     }
 
     @Override
-    public List<SdEngInfoBH> getByRvcd(String rvcd) {
-        return engInfoBHMapper.selectByRvcd(rvcd);
+    public List<SdEngInfoBH> getByRvcd(String rvcd,String reachcd) {
+        return engInfoBHMapper.selectByRvcd(rvcd,reachcd);
     }
 
     @Override
diff --git a/backend/src/main/java/com/yfd/platform/qgc_base/service/impl/SdRvcdDicServiceImpl.java b/backend/src/main/java/com/yfd/platform/qgc_base/service/impl/SdRvcdDicServiceImpl.java
index f1768cd5..c9341c3f 100644
--- a/backend/src/main/java/com/yfd/platform/qgc_base/service/impl/SdRvcdDicServiceImpl.java
+++ b/backend/src/main/java/com/yfd/platform/qgc_base/service/impl/SdRvcdDicServiceImpl.java
@@ -181,7 +181,7 @@ public class SdRvcdDicServiceImpl extends ServiceImpl<SdRvcdDicMapper, SdRvcdDic
 
                 }
             } else if ("RVCD".equals(orgType)) {
-                List<SdEngInfoBH> stationList = engInfoBHMapper.selectByRvcd(orgId);
+                List<SdEngInfoBH> stationList = engInfoBHMapper.selectByRvcd(null,orgId);
                 if (stationList != null) {
                     for (SdEngInfoBH station : stationList) {
                         if (station.getStcd() != null) {
diff --git a/backend/src/main/java/com/yfd/platform/qgc_base/service/impl/TreeStructureServiceImpl.java b/backend/src/main/java/com/yfd/platform/qgc_base/service/impl/TreeStructureServiceImpl.java
index 4ceb2135..1ddff22c 100644
--- a/backend/src/main/java/com/yfd/platform/qgc_base/service/impl/TreeStructureServiceImpl.java
+++ b/backend/src/main/java/com/yfd/platform/qgc_base/service/impl/TreeStructureServiceImpl.java
@@ -61,7 +61,7 @@ public class TreeStructureServiceImpl implements ITreeStructureService {
 
         Map<String, List<SdEngInfoBH>> rvcdEngMap = new HashMap<>();
         for (SdRvcdDic rvcdDic : rvcdList) {
-            List<SdEngInfoBH> engList = engInfoBHMapper.selectByRvcd(rvcdDic.getRvcd());
+            List<SdEngInfoBH> engList = engInfoBHMapper.selectByRvcd(null,rvcdDic.getRvcd());
 
             // 如果提供了电站名称参数，进行模糊匹配筛选
             if (StringUtils.hasText(engName) && engList != null) {
@@ -172,7 +172,7 @@ public class TreeStructureServiceImpl implements ITreeStructureService {
         // 2. 预加载所有流域下的电站（按流域分组）
         Map<String, List<SdEngInfoBH>> rvcdEngMap = new HashMap<>();
         for (SdRvcdDic rvcdDic : rvcdList) {
-            List<SdEngInfoBH> engList = engInfoBHMapper.selectByRvcd(rvcdDic.getRvcd());
+            List<SdEngInfoBH> engList = engInfoBHMapper.selectByRvcd(null,rvcdDic.getRvcd());
 
             // 如果提供了电站名称参数，进行模糊匹配筛选
             if (StringUtils.hasText(engName) && engList != null) {
@@ -366,7 +366,7 @@ public class TreeStructureServiceImpl implements ITreeStructureService {
         // 2. 预加载所有流域下的电站（按流域分组）
         Map<String, List<SdEngInfoBH>> rvcdEngMap = new HashMap<>();
         for (SdRvcdDic rvcdDic : rvcdList) {
-            List<SdEngInfoBH> engList = engInfoBHMapper.selectByRvcd(rvcdDic.getRvcd());
+            List<SdEngInfoBH> engList = engInfoBHMapper.selectByRvcd(null,rvcdDic.getRvcd());
 
             // 如果提供了电站名称参数，进行模糊匹配筛选
             if (StringUtils.hasText(engName) && engList != null) {
diff --git a/backend/src/main/resources/mapper/qgc_base/SdEngInfoBHMapper.xml b/backend/src/main/resources/mapper/qgc_base/SdEngInfoBHMapper.xml
index 135852bf..58f9c214 100644
--- a/backend/src/main/resources/mapper/qgc_base/SdEngInfoBHMapper.xml
+++ b/backend/src/main/resources/mapper/qgc_base/SdEngInfoBHMapper.xml
@@ -292,8 +292,15 @@
 
     <select id="selectByRvcd" resultMap="BaseResultMap">
         SELECT * FROM SD_ENGINFO_B_H
-        WHERE RVCD = #{rvcd}
-        ORDER BY ORDER_INDEX ASC
+        <where>
+            <if test="reachcd != null and reachcd != ''">
+                AND REACHCD = #{reachcd}
+            </if>
+            <if test="rvcd != null and rvcd != ''">
+                AND RVCD = #{rvcd}
+            </if>
+        </where>
+        ORDER BY RVCD, REACHCD
     </select>
 
     <select id="selectByHbrvcd" resultMap="BaseResultMap">