diff --git a/src/main/java/com/spring/modules/sampleManagement/data/PlmTechnicalSpecificationSheetData.java b/src/main/java/com/spring/modules/sampleManagement/data/PlmTechnicalSpecificationSheetData.java
index 57b1d4f3..79bd4b32 100644
--- a/src/main/java/com/spring/modules/sampleManagement/data/PlmTechnicalSpecificationSheetData.java
+++ b/src/main/java/com/spring/modules/sampleManagement/data/PlmTechnicalSpecificationSheetData.java
@@ -424,11 +424,17 @@ public class PlmTechnicalSpecificationSheetData extends PlmTechnicalSpecificatio
     }
 
     public String getUserName() {
-        return userName;
+        if (hasText(userName)) {
+            return userName;
+        }
+        return username;
     }
 
     public void setUserName(String userName) {
         this.userName = userName;
+        if (hasText(userName) || !hasText(this.username)) {
+            this.username = userName;
+        }
     }
 
     public String getMenuId() {
@@ -568,11 +574,21 @@ public class PlmTechnicalSpecificationSheetData extends PlmTechnicalSpecificatio
     }
 
     public String getUsername() {
-        return username;
+        if (hasText(username)) {
+            return username;
+        }
+        return userName;
     }
 
     public void setUsername(String username) {
         this.username = username;
+        if (hasText(username) || !hasText(this.userName)) {
+            this.userName = username;
+        }
+    }
+
+    private boolean hasText(String value) {
+        return value != null && !value.trim().isEmpty();
     }
 
     public String getFinalCustomerNo() {
diff --git a/src/main/java/com/spring/modules/sampleManagement/service/Impl/TechnicalSpecificationServiceImpl.java b/src/main/java/com/spring/modules/sampleManagement/service/Impl/TechnicalSpecificationServiceImpl.java
index e0153847..909807bc 100644
--- a/src/main/java/com/spring/modules/sampleManagement/service/Impl/TechnicalSpecificationServiceImpl.java
+++ b/src/main/java/com/spring/modules/sampleManagement/service/Impl/TechnicalSpecificationServiceImpl.java
@@ -113,6 +113,31 @@ public class TechnicalSpecificationServiceImpl implements TechnicalSpecification
     @Autowired
     private DictDataServiceImpl dictDataServiceImpl;
 
+    private void fillBmOperatorFields(PlmTechnicalSpecificationSheetData data) {
+        if (data == null) {
+            return;
+        }
+        String operator = data.getUserName();
+        if (!StringUtils.hasText(operator)) {
+            operator = data.getUsername();
+        }
+        if (!StringUtils.hasText(operator)) {
+            operator = data.getUpdateBy();
+        }
+        if (!StringUtils.hasText(operator)) {
+            Object principal = SecurityUtils.getSubject().getPrincipal();
+            if (principal instanceof SysUserEntity) {
+                operator = ((SysUserEntity) principal).getUsername();
+            }
+        }
+        if (!StringUtils.hasText(operator)) {
+            return;
+        }
+        data.setUserName(operator);
+        data.setUsername(operator);
+        data.setUpdateBy(operator);
+    }
+
     @Override
     public PageUtils technicalSpecificationListSearch(PlmTechnicalSpecificationSheetData inData){
 //        IPage<PlmTechnicalSpecificationSheetData> resultList = this.technicalSpecificationMapper.technicalSpecificationListSearch(
@@ -447,6 +472,7 @@ public class TechnicalSpecificationServiceImpl implements TechnicalSpecification
 
     @Override
     public void updateBMBasicInfoEntry(PlmTechnicalSpecificationSheetData inData){
+        fillBmOperatorFields(inData);
         technicalSpecificationMapper.updateBMBasicInfoEntry(inData);
     }
 
@@ -1552,6 +1578,7 @@ public class TechnicalSpecificationServiceImpl implements TechnicalSpecification
     public void issueChange(PlmTechnicalSpecificationSheetData data) {
         SysUserEntity sysUserEntity = (SysUserEntity) SecurityUtils.getSubject().getPrincipal();
         data.setUserName(sysUserEntity.getUsername());
+        fillBmOperatorFields(data);
         // 修改
 //        updateBMBasicInformation(data);
         // 关闭调用OA接口时
@@ -1733,6 +1760,7 @@ public class TechnicalSpecificationServiceImpl implements TechnicalSpecification
     public void submitChange(PlmTechnicalSpecificationSheetData data) {
         SysUserEntity sysUserEntity = (SysUserEntity) SecurityUtils.getSubject().getPrincipal();
         data.setUserName(sysUserEntity.getUsername());
+        fillBmOperatorFields(data);
         // 修改
 //        updateBMBasicInformation(data);
         // 获取提交基础数据
@@ -2108,6 +2136,7 @@ public class TechnicalSpecificationServiceImpl implements TechnicalSpecification
     @Override
     @Transactional
     public void bmStatusToDead(PlmTechnicalSpecificationSheetData data) {
+        fillBmOperatorFields(data);
         // 查询特殊权限 校验是否可以执行操作
         List<ProcessFormEntity> processFormList = changeManagementMapper.queryRequestId(data.getSite(), "", data.getCodeNo());
         if (!processFormList.isEmpty()) {
@@ -2157,6 +2186,7 @@ public class TechnicalSpecificationServiceImpl implements TechnicalSpecification
     @Override
     @Transactional
     public void bmStatusToCg(PlmTechnicalSpecificationSheetData data) {
+        fillBmOperatorFields(data);
         // 将技术参数卡的状态改为"草稿"状态
         // 将技术参数卡的Step_id改为初始状态（空）
         // ECN_flag 改为N，生产状态(stage)改为Sample
@@ -2176,6 +2206,7 @@ public class TechnicalSpecificationServiceImpl implements TechnicalSpecification
     @Override
     @Transactional
     public void bmStatusToFinish(PlmTechnicalSpecificationSheetData data) {
+        fillBmOperatorFields(data);
 
         // 2025-07-17 修改技术参数卡的状态为已完成后，重新获取bom和工艺路线
         List<BomComponentVo> bomList = fetchBomComponentDetails(data.getSite(), data.getCodeNo(), "archiving");
diff --git a/src/main/resources/mapper/sampleManagement/TechnicalSpecificationMapper.xml b/src/main/resources/mapper/sampleManagement/TechnicalSpecificationMapper.xml
index 5603fdb5..835e556c 100644
--- a/src/main/resources/mapper/sampleManagement/TechnicalSpecificationMapper.xml
+++ b/src/main/resources/mapper/sampleManagement/TechnicalSpecificationMapper.xml
@@ -2321,7 +2321,7 @@
         update plm_technical_specification_sheet
         set status = #{status},
             update_date = getDate(),
-            update_by = #{userName}
+            update_by = #{updateBy}
         where site = #{site} and code_no = #{codeNo}
     </update>
 
@@ -2824,7 +2824,7 @@
         set step_id = #{stepId},
             status = #{status},
             update_date = getDate(),
-            update_by = #{userName},
+            update_by = #{updateBy},
             ECN_flag = 'N',
             stage = 'Sample'
         where site = #{site} and code_no = #{codeNo}
@@ -3069,7 +3069,7 @@
             step_id = #{stepId},
             stage = #{stage},
             update_date = getDate(),
-            update_by = #{userName}
+            update_by = #{updateBy}
         where site = #{site} and code_no = #{codeNo}
     </update>
 
@@ -3374,7 +3374,7 @@
     <update id="updateProcessForm"
             parameterType="com.spring.modules.sampleManagement.data.PlmTechnicalSpecificationSheetData">
         UPDATE a
-        SET a.update_by = #{username},
+        SET a.update_by = #{updateBy},
             a.update_date = GETDATE(),
             node_conclusion = #{nodeConclusion},
             is_remark = 2