diff --git a/src/main/java/com/spring/modules/part/service/impl/PartInformationServiceImpl.java b/src/main/java/com/spring/modules/part/service/impl/PartInformationServiceImpl.java
index 869b0ae7..76128e91 100644
--- a/src/main/java/com/spring/modules/part/service/impl/PartInformationServiceImpl.java
+++ b/src/main/java/com/spring/modules/part/service/impl/PartInformationServiceImpl.java
@@ -106,6 +106,8 @@ import static com.spring.modules.part.task.PartRelatedTask.convertToSQLString;
 @Slf4j
 public class PartInformationServiceImpl extends ServiceImpl<PartInformationMapper, PartInformationEntity> implements PartInformationService {
 
+    private static final int DRAWING_NO_SYNC_PART_PREFIX_LENGTH = 8;
+
     @Autowired
     private ProcedureDao procedureDao;
 
@@ -912,6 +914,7 @@ public class PartInformationServiceImpl extends ServiceImpl<PartInformationMappe
         updateInformationWrapper.eq("site", data.getSite());
         updateInformationWrapper.eq("part_no", data.getPartNo());
         partInformationMapper.update(data, updateInformationWrapper);
+        syncDrawingNoByPartPrefix(data);
         recordChangeRemark(data.getSite(), data.getPartNo(), data.getUpdateBy(), "用户编辑物料");
 
         if (dataUrl) {
@@ -1237,6 +1240,7 @@ public class PartInformationServiceImpl extends ServiceImpl<PartInformationMappe
         updateInformationWrapper.eq("site", data.getSite());
         updateInformationWrapper.eq("part_no", data.getPartNo());
         partInformationMapper.update(data, updateInformationWrapper);
+        syncDrawingNoByPartPrefix(data);
         recordChangeRemark(data.getSite(), data.getPartNo(), data.getUpdateBy(), "用户编辑物料(项目页面)");
         // 判断是否需要修改项目物料的BU
         if (StringUtils.hasText(data.getBuNo())) {
@@ -1262,28 +1266,95 @@ public class PartInformationServiceImpl extends ServiceImpl<PartInformationMappe
     @Override
     @Transactional
     public void updatePartDrawingNo(PartInformationVo data) {
-        if (!StringUtils.hasText(data.getSite()) || !StringUtils.hasText(data.getPartNo())) {
+        String site = normalizePartAndDrawingText(data.getSite());
+        String partNo = normalizePartAndDrawingText(data.getPartNo());
+        String drawingNo = normalizePartAndDrawingText(data.getDrawingNo());
+        if (!StringUtils.hasText(site) || !StringUtils.hasText(partNo)) {
             throw new RuntimeException("缺少site或物料编码，无法自动保存编码！");
         }
-        if (!StringUtils.hasText(data.getDrawingNo()) || "NA".equalsIgnoreCase(data.getDrawingNo().trim())) {
+        if (!StringUtils.hasText(drawingNo) || "NA".equalsIgnoreCase(drawingNo)) {
             throw new RuntimeException("编码为空，无法自动保存！");
         }
         PartInformationEntity partData = partInformationMapper.selectOne(
                 new QueryWrapper<PartInformationEntity>()
-                        .eq("site", data.getSite())
-                        .eq("part_no", data.getPartNo())
+                        .eq("site", site)
+                        .eq("part_no", partNo)
         );
         if (partData == null) {
             throw new RuntimeException("未找到对应物料，无法自动保存编码！");
         }
         PartInformationEntity updateData = new PartInformationEntity();
-        updateData.setDrawingNo(data.getDrawingNo().trim());
+        updateData.setDrawingNo(drawingNo);
         updateData.setUpdateBy(data.getUpdateBy());
         UpdateWrapper<PartInformationEntity> updateWrapper = new UpdateWrapper<>();
-        updateWrapper.eq("site", data.getSite());
-        updateWrapper.eq("part_no", data.getPartNo());
+        updateWrapper.eq("site", site);
+        updateWrapper.eq("part_no", partNo);
         partInformationMapper.update(updateData, updateWrapper);
-        recordChangeRemark(data.getSite(), data.getPartNo(), data.getUpdateBy(), "占有编码自动保存");
+        data.setSite(site);
+        data.setPartNo(partNo);
+        data.setDrawingNo(drawingNo);
+        syncDrawingNoByPartPrefix(data);
+        recordChangeRemark(site, partNo, data.getUpdateBy(), "占有编码自动保存");
+    }
+
+    private void syncDrawingNoByPartPrefix(PartInformationVo data) {
+        if (data == null) {
+            return;
+        }
+        String site = normalizePartAndDrawingText(data.getSite());
+        String partNo = normalizePartAndDrawingText(data.getPartNo());
+        String drawingNo = normalizePartAndDrawingText(data.getDrawingNo());
+        if (!StringUtils.hasText(site) || !StringUtils.hasText(partNo) || isUnmaintainedDrawingNo(drawingNo)) {
+            return;
+        }
+        if (partNo.length() < DRAWING_NO_SYNC_PART_PREFIX_LENGTH) {
+            return;
+        }
+        String partNoPrefix = partNo.substring(0, DRAWING_NO_SYNC_PART_PREFIX_LENGTH);
+        List<PartInformationEntity> samePrefixPartList = partInformationMapper.selectList(
+                new QueryWrapper<PartInformationEntity>()
+                        .select("part_no", "drawing_no")
+                        .eq("site", site)
+                        .likeRight("part_no", partNoPrefix)
+                        .ne("part_no", partNo)
+        );
+        if (samePrefixPartList == null || samePrefixPartList.isEmpty()) {
+            return;
+        }
+        List<String> pendingSyncPartNos = samePrefixPartList.stream()
+                .filter(Objects::nonNull)
+                .filter(item -> isUnmaintainedDrawingNo(item.getDrawingNo()))
+                .map(PartInformationEntity::getPartNo)
+                .map(this::normalizePartAndDrawingText)
+                .filter(StringUtils::hasText)
+                .distinct()
+                .collect(Collectors.toList());
+        if (pendingSyncPartNos.isEmpty()) {
+            return;
+        }
+        PartInformationEntity syncData = new PartInformationEntity();
+        syncData.setDrawingNo(drawingNo);
+        syncData.setUpdateBy(data.getUpdateBy());
+        UpdateWrapper<PartInformationEntity> syncWrapper = new UpdateWrapper<>();
+        syncWrapper.eq("site", site);
+        syncWrapper.in("part_no", pendingSyncPartNos);
+        int syncRows = partInformationMapper.update(syncData, syncWrapper);
+        if (syncRows > 0) {
+            log.info("同前8位编码联动成功，site={}, sourcePartNo={}, prefix={}, drawingNo={}, syncRows={}",
+                    site, partNo, partNoPrefix, drawingNo, syncRows);
+        }
+    }
+
+    private String normalizePartAndDrawingText(String text) {
+        if (text == null) {
+            return "";
+        }
+        return text.trim();
+    }
+
+    private boolean isUnmaintainedDrawingNo(String drawingNo) {
+        String normalizedDrawingNo = normalizePartAndDrawingText(drawingNo);
+        return !StringUtils.hasText(normalizedDrawingNo) || "NA".equalsIgnoreCase(normalizedDrawingNo);
     }
 
     /**