diff --git a/src/main/java/com/xujie/sys/modules/pms/mapper/ProofingInformationMapper.java b/src/main/java/com/xujie/sys/modules/pms/mapper/ProofingInformationMapper.java
index 22c04cf1..ea7d5945 100644
--- a/src/main/java/com/xujie/sys/modules/pms/mapper/ProofingInformationMapper.java
+++ b/src/main/java/com/xujie/sys/modules/pms/mapper/ProofingInformationMapper.java
@@ -125,4 +125,12 @@ public interface ProofingInformationMapper extends BaseMapper<ProofingInformatio
             "#{updateDate} " +
             "WHERE id = CONVERT(INT, #{documentDefinitionListId})")
     void updateDocumentListForCopy(ProofDocumentData proofDocumentData);
+
+    /**
+     * 打样下达时，定位「试验申请单+三方签字」对应的 plm_document_list_definition 主键 id
+     */
+    Integer selectDocumentListIdForErfProofCopy(@Param("site") String site,
+                                                @Param("proofingId") Integer proofingId,
+                                                @Param("projectId") Integer projectId,
+                                                @Param("projectPartId") Integer projectPartId);
 }
diff --git a/src/main/java/com/xujie/sys/modules/pms/service/Impl/ProofingInformationServiceImpl.java b/src/main/java/com/xujie/sys/modules/pms/service/Impl/ProofingInformationServiceImpl.java
index 74ea4f74..ff6e9245 100644
--- a/src/main/java/com/xujie/sys/modules/pms/service/Impl/ProofingInformationServiceImpl.java
+++ b/src/main/java/com/xujie/sys/modules/pms/service/Impl/ProofingInformationServiceImpl.java
@@ -16,7 +16,6 @@ import com.xujie.sys.modules.sift.vo.QuerySavedVo;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
-
 import java.util.*;
 import java.util.function.Function;
 
@@ -30,6 +29,16 @@ import java.util.function.Function;
 @Service
 public class ProofingInformationServiceImpl implements ProofingInformationService {
 
+    /**
+     * 工程试验申请单在 sys_oss 中的业务标识（与 erf_exp_apply 附件查询一致）
+     */
+    private static final String ERF_OSS_MODULE = "ERF";
+    private static final String ERF_OSS_EXP_APPLY = "EXP_APPLY";
+    /**
+     * 打样文档与 getCopyDocumentFileList 等查询一致
+     */
+    private static final String PROOF_OSS_REFTYPE = "项目文档";
+
     @Autowired
     private ProofingInformationMapper proofingInformationMapper;
 
@@ -102,7 +111,11 @@ public class ProofingInformationServiceImpl implements ProofingInformationServic
         boolean deleteSuccessful = true;
         // 根据Id拿到旧数据
         ProofingInformationData proofingInformationData = proofingInformationMapper.selecProofingOne(data.getProofingId());
-        if (data.getType() != 1) {
+        if (Objects.equals(data.getType(), 1)) {
+            copyErfExpApplyAttachmentsToProofDocument(data);
+        }
+
+        if (!Objects.equals(data.getType(), 1)) {
             // 如果有旧记录且项目分类不同，进行删除操作
             if (proofingInformationData != null && !proofingInformationData.getcProjectTypeDb().equals(data.getcProjectTypeDb())) {
                 try {
@@ -462,6 +475,75 @@ public class ProofingInformationServiceImpl implements ProofingInformationServic
         return proofingInformationMapper.getCopyDocumentFileList(data);
     }
 
+    /**
+     * 打样单号与工程试验申请单号一致时，将 erf_exp_apply 在 sys_oss 中的附件（order_ref1=ERF, order_ref6=EXP_APPLY）
+     * 复制到打样文档「试验申请单+三方签字」对应的文档清单行。
+     */
+    private void copyErfExpApplyAttachmentsToProofDocument(ProofingInformationData data) {
+        if (data == null) {
+            return;
+        }
+        String applyNo = data.getProofingNo();
+        if (applyNo == null || applyNo.trim().isEmpty()) {
+            return;
+        }
+        applyNo = applyNo.trim();
+        Integer proofingId = data.getProofingId();
+        Integer projectId = data.getProjectId();
+        Integer projectPartId = data.getProjectPartId();
+        String site = data.getSite();
+        if (proofingId == null || projectId == null || projectPartId == null || site == null || site.isEmpty()) {
+            return;
+        }
+        Integer docListId = proofingInformationMapper.selectDocumentListIdForErfProofCopy(site, proofingId, projectId, projectPartId);
+        if (docListId == null) {
+            return;
+        }
+        QueryWrapper<SysOssEntity> qw = new QueryWrapper<>();
+        qw.eq("order_ref1", ERF_OSS_MODULE).eq("order_ref2", applyNo).eq("order_ref6", ERF_OSS_EXP_APPLY);
+        List<SysOssEntity> sources = sysOssService.list(qw);
+        if (sources == null || sources.isEmpty()) {
+            return;
+        }
+        String updateBy = data.getUpdateBy() != null ? data.getUpdateBy() : "";
+        String docDefIdStr = String.valueOf(docListId);
+        Date now = new Date();
+        boolean first = true;
+        for (SysOssEntity src : sources) {
+            if (src == null) {
+                continue;
+            }
+            SysOssEntity n = new SysOssEntity();
+            n.setUrl(src.getUrl());
+            n.setNewFileName(src.getNewFileName());
+            n.setFileName(src.getFileName());
+            n.setFileType(src.getFileType());
+            n.setFileSuffix(src.getFileSuffix());
+            n.setFileTypeCode(src.getFileTypeCode());
+            n.setCreatedBy(updateBy);
+            n.setCreateDate(now);
+            n.setOrderRef1(site);
+            n.setOrderRef2(String.valueOf(proofingId));
+            n.setOrderRef3(docDefIdStr);
+            n.setOrderRef4(String.valueOf(projectId));
+            n.setOrderRef5(String.valueOf(projectPartId));
+            n.setOrderRef6(null);
+            n.setOrderReftype(PROOF_OSS_REFTYPE);
+            n.setConclusion(src.getConclusion());
+            n.setCAdditionalInfo(src.getCAdditionalInfo());
+            n.setProjectIspush(src.getProjectIspush());
+            sysOssService.save(n);
+            if (first) {
+                ProofDocumentData pd = new ProofDocumentData();
+                pd.setDocumentDefinitionListId(docDefIdStr);
+                pd.setUpdateBy(updateBy);
+                pd.setUpdateDate(now);
+                proofingInformationMapper.updateDocumentListForCopy(pd);
+                first = false;
+            }
+        }
+    }
+
     @Override
     @Transactional(rollbackFor = Exception.class)
     public void copyDocumentFileToDoc(ProofDocumentData data) {
diff --git a/src/main/resources/mapper/pms/ProofingInformationMapper.xml b/src/main/resources/mapper/pms/ProofingInformationMapper.xml
index ee99c168..11bed8c6 100644
--- a/src/main/resources/mapper/pms/ProofingInformationMapper.xml
+++ b/src/main/resources/mapper/pms/ProofingInformationMapper.xml
@@ -1120,6 +1120,20 @@
     <select id="selecProofingOneByNo" resultType="com.xujie.sys.modules.pms.data.ProofingInformationData">
         SELECT * FROM plm_proofing_information WHERE proofing_no = #{proofingNo}
     </select>
+
+    <!-- 试验申请单附件同步至打样文档：文档类型为「试验申请单+三方签字」（与前端 document_type + document_desc 展示一致） -->
+    <select id="selectDocumentListIdForErfProofCopy" resultType="java.lang.Integer">
+        SELECT TOP 1 p.id
+        FROM plm_document_list_definition AS p
+        INNER JOIN document_type_definition AS dtd
+            ON p.document_type_id = dtd.document_type_id AND p.site = dtd.Site
+        WHERE p.site = #{site}
+          AND p.proofing_id = #{proofingId}
+          AND p.project_id = #{projectId}
+          AND p.test_part_id = #{projectPartId}
+          AND dtd.document_type LIKE N'%试验申请单%'
+          AND dtd.document_type LIKE N'%三方签字%'
+    </select>
     <select id="getCopyDocumentFileList" resultType="com.xujie.sys.modules.pms.data.ProofDocumentData">
         Select t.site,t.project_id,pi.project_no,pi.project_desc,t.test_part_id,ppp.test_part_no,ppp.part_desc,t.proofing_id,isnull(ppi.proofing_no,'*') as proofing_no,t.id,t.document_type_id,dtd.document_type,dtd.estimated_completion_days,(SELECT role_desc FROM business_role WHERE role_no = dtd.responsible_department AND site = '2') AS responsible_department
              ,t.uploaded_flag,d.file_name,d.create_date,d.created_by,d.id as oss_id,d.conclusion,d.url