diff --git a/mhd_wms/src/main/resources/mapper/materialInventory/MaterialInventoryMapper.xml b/mhd_wms/src/main/resources/mapper/materialInventory/MaterialInventoryMapper.xml
index df9b83b76..186d60013 100644
--- a/mhd_wms/src/main/resources/mapper/materialInventory/MaterialInventoryMapper.xml
+++ b/mhd_wms/src/main/resources/mapper/materialInventory/MaterialInventoryMapper.xml
@@ -748,21 +748,36 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
         <if test="productionDate == null">
             AND a.PRODUCTION_DATE is null
         </if>
-        <if test="extAttr2 == null or extAttr2 == ''">
+        <if test="extAttr2 == ''">
             AND a.EXT_ATTR_2 = #{extAttr2}
         </if>
-        <if test="extAttr1 == null or extAttr1 == ''">
+        <if test="extAttr1 == ''">
             AND a.EXT_ATTR_1 = #{extAttr1}
         </if>
-        <if test="boxPalletNo == null or boxPalletNo == ''">
+        <if test="boxPalletNo == ''">
             AND a.BOX_PALLET_NO = #{boxPalletNo}
         </if>
-        <if test="sheetRefNo == null or sheetRefNo == ''">
+        <if test="sheetRefNo == ''">
             AND a.SHEET_REF_NO = #{sheetRefNo}
         </if>
-        <if test="batchRefNo == null or batchRefNo == ''">
+        <if test="batchRefNo == ''">
             AND a.BATCH_REF_NO = #{batchRefNo}
         </if>
+        <if test="extAttr2 == null">
+            AND a.EXT_ATTR_2 is null
+        </if>
+        <if test="extAttr1 == null">
+            AND a.EXT_ATTR_1 is null
+        </if>
+        <if test="boxPalletNo == null">
+            AND a.BOX_PALLET_NO is null
+        </if>
+        <if test="sheetRefNo == null">
+            AND a.SHEET_REF_NO is null
+        </if>
+        <if test="batchRefNo == null">
+            AND a.BATCH_REF_NO is null
+        </if>
     </select>
 
     <!-- 根据库存ID查询库存信息（包含批次属性字段） -->