diff --git a/nl-module-wms/nl-module-wms-server/src/main/java/cn/code/nl/module/wms/dal/mysql/iostorinvdtl/IostorinvDtlMapper.java b/nl-module-wms/nl-module-wms-server/src/main/java/cn/code/nl/module/wms/dal/mysql/iostorinvdtl/IostorinvDtlMapper.java
index df00b8ea..c3f7714d 100644
--- a/nl-module-wms/nl-module-wms-server/src/main/java/cn/code/nl/module/wms/dal/mysql/iostorinvdtl/IostorinvDtlMapper.java
+++ b/nl-module-wms/nl-module-wms-server/src/main/java/cn/code/nl/module/wms/dal/mysql/iostorinvdtl/IostorinvDtlMapper.java
@@ -5,8 +5,10 @@ import java.util.*;
 import cn.code.nl.framework.common.pojo.PageResult;
 import cn.code.nl.framework.mybatis.core.query.LambdaQueryWrapperX;
 import cn.code.nl.framework.mybatis.core.mapper.BaseMapperX;
+import cn.code.nl.module.wms.controller.admin.iostorinv.vo.AvailableInventoryVO;
 import cn.code.nl.module.wms.dal.dataobject.iostorinvdtl.IostorinvDtlDO;
 import org.apache.ibatis.annotations.Mapper;
+import org.apache.ibatis.annotations.Param;
 import cn.code.nl.module.wms.controller.admin.iostorinvdtl.vo.*;
 
 /**
@@ -41,4 +43,18 @@ public interface IostorinvDtlMapper extends BaseMapperX<IostorinvDtlDO> {
                 .orderByDesc(IostorinvDtlDO::getIostorinvdtlId));
     }
 
+    /**
+     * 查询可用库存（wms_group_plate 关联 wms_structattr）
+     *
+     * @param storId       仓库标识（必传）
+     * @param materialCode 物料编码（可选）
+     * @param pcsn         批次（可选）
+     * @param vehicleCode  载具编码（可选）
+     * @return 可用库存列表
+     */
+    List<AvailableInventoryVO> selectAvailableInventory(
+            @Param("storId") String storId,
+            @Param("materialCode") String materialCode,
+            @Param("pcsn") String pcsn,
+            @Param("vehicleCode") String vehicleCode);
 }
\ No newline at end of file
diff --git a/nl-module-wms/nl-module-wms-server/src/main/resources/mapper/iostorinvdtl/IostorinvDtlMapper.xml b/nl-module-wms/nl-module-wms-server/src/main/resources/mapper/iostorinvdtl/IostorinvDtlMapper.xml
index 9e1b610f..a58111ac 100644
--- a/nl-module-wms/nl-module-wms-server/src/main/resources/mapper/iostorinvdtl/IostorinvDtlMapper.xml
+++ b/nl-module-wms/nl-module-wms-server/src/main/resources/mapper/iostorinvdtl/IostorinvDtlMapper.xml
@@ -9,4 +9,38 @@
         文档可见：https://www.iocoder.cn/MyBatis/x-plugins/
      -->
 
+    <select id="selectAvailableInventory"
+            resultType="cn.code.nl.module.wms.controller.admin.iostorinv.vo.AvailableInventoryVO">
+        SELECT
+            gp.vehicle_code     AS vehicleCode,
+            gp.pcsn             AS pcsn,
+            gp.material_code    AS materialCode,
+            gp.material_id      AS materialId,
+            gp.qty              AS qty,
+            gp.frozen_qty       AS frozenQty,
+            (gp.qty - gp.frozen_qty) AS availableQty,
+            gp.qty_unit_id      AS qtyUnitId,
+            gp.qty_unit_name    AS qtyUnitName,
+            gp.ext_code         AS extCode,
+            gp.ext_type         AS extType,
+            gp.ext_dtl_code     AS extDtlCode,
+            sa.stor_id          AS storId,
+            sa.stor_code        AS storCode,
+            sa.stor_name        AS storName
+        FROM wms_group_plate gp
+        INNER JOIN wms_structattr sa
+            ON gp.vehicle_code = sa.storagevehicle_code
+        WHERE sa.stor_id = #{storId}
+          AND gp.status = '可用'
+          AND (gp.qty - gp.frozen_qty) > 0
+        <if test="materialCode != null and materialCode != ''">
+          AND gp.material_code = #{materialCode}
+        </if>
+        <if test="pcsn != null and pcsn != ''">
+          AND gp.pcsn = #{pcsn}
+        </if>
+        <if test="vehicleCode != null and vehicleCode != ''">
+          AND gp.vehicle_code = #{vehicleCode}
+        </if>
+    </select>
 </mapper>
\ No newline at end of file