diff --git a/src/main/java/com/xujie/modules/oss/dao/SysOssDao.java b/src/main/java/com/xujie/modules/oss/dao/SysOssDao.java
index 3b723db..f982bf4 100644
--- a/src/main/java/com/xujie/modules/oss/dao/SysOssDao.java
+++ b/src/main/java/com/xujie/modules/oss/dao/SysOssDao.java
@@ -56,6 +56,10 @@ public interface SysOssDao extends BaseMapper<SysOssEntity> {
 
     List<SysOssEntity> queryPartSopList(@Param("site") String site, @Param("partNo") String partNo);
 
+    List<String> queryPartSkuCodesByPartNo(@Param("site") String site, @Param("partNo") String partNo);
+
+    List<SysOssEntity> queryPartSkuSopList(@Param("site") String site, @Param("skuCodes") List<String> skuCodes);
+
     List<String> queryPartFamilyIds(@Param("site") String site, @Param("partNo") String partNo);
 
     List<SysOssEntity> queryPartFamilySopList(@Param("site") String site, @Param("familyIds") List<String> familyIds);
diff --git a/src/main/java/com/xujie/modules/sys/service/impl/SysFileServiceImpl.java b/src/main/java/com/xujie/modules/sys/service/impl/SysFileServiceImpl.java
index 157bf17..f44c713 100644
--- a/src/main/java/com/xujie/modules/sys/service/impl/SysFileServiceImpl.java
+++ b/src/main/java/com/xujie/modules/sys/service/impl/SysFileServiceImpl.java
@@ -119,6 +119,14 @@ public class SysFileServiceImpl implements SysFileService {
             markSopDisplayRemark(partSopList, "物料SOP");
             appendUniqueFiles(files1, partSopList);
 
+            // 按料号反查SKU并追加 PartSkuSop 文件
+            List<String> skuCodes = sysOssDao.queryPartSkuCodesByPartNo(inData.getOrderRef1(), inData.getPartNo());
+            if (skuCodes != null && !skuCodes.isEmpty()) {
+                List<SysOssEntity> partSkuSopList = sysOssDao.queryPartSkuSopList(inData.getOrderRef1(), skuCodes);
+                markSopDisplayRemark(partSkuSopList, "SKU-SOP");
+                appendUniqueFiles(files1, partSkuSopList);
+            }
+
             // 读取物料分类（1/2/3级）并追加 PartFamilySop 文件
             List<String> familyIds = sysOssDao.queryPartFamilyIds(inData.getOrderRef1(), inData.getPartNo());
             if (familyIds != null && !familyIds.isEmpty()) {
@@ -152,7 +160,7 @@ public class SysFileServiceImpl implements SysFileService {
         }
         for (SysOssEntity entity : list) {
             if (!isNotBlank(entity.getOrderRef3())) {
-                if ("物料分类SOP".equals(defaultRemark) && isNotBlank(entity.getOrderRef2())) {
+                if (("物料分类SOP".equals(defaultRemark) || "SKU-SOP".equals(defaultRemark)) && isNotBlank(entity.getOrderRef2())) {
                     entity.setOrderRef3(defaultRemark + "（" + entity.getOrderRef2() + "）");
                 } else {
                     entity.setOrderRef3(defaultRemark);
diff --git a/src/main/resources/mapper/oss/SysOssDao.xml b/src/main/resources/mapper/oss/SysOssDao.xml
index fb1e7ad..20e364f 100644
--- a/src/main/resources/mapper/oss/SysOssDao.xml
+++ b/src/main/resources/mapper/oss/SysOssDao.xml
@@ -144,6 +144,41 @@
         ORDER BY create_date DESC
     </select>
 
+    <select id="queryPartSkuCodesByPartNo" resultType="java.lang.String">
+        SELECT DISTINCT LTRIM(RTRIM(sku)) AS sku
+        FROM part
+        WHERE site = #{site}
+          AND part_no = #{partNo}
+          AND sku IS NOT NULL
+          AND LTRIM(RTRIM(sku)) != ''
+    </select>
+
+    <select id="queryPartSkuSopList" resultType="SysOssEntity">
+        SELECT
+            id,
+            url,
+            create_date,
+            file_name,
+            new_file_name,
+            created_by,
+            order_ref1,
+            order_ref2,
+            order_ref3,
+            order_ref4,
+            file_type,
+            file_suffix,
+            file_type_code,
+            order_reftype as orderReftype
+        FROM sys_oss
+        WHERE order_ref1 = #{site}
+          AND order_ref2 IN
+          <foreach collection="skuCodes" item="skuCode" open="(" separator="," close=")">
+              #{skuCode}
+          </foreach>
+          AND order_reftype = 'PartSkuSop'
+        ORDER BY create_date DESC
+    </select>
+
     <select id="queryPartFamilyIds" resultType="java.lang.String">
         SELECT DISTINCT family_id
         FROM (