diff --git a/src/views/modules/erf/expApplyList.vue b/src/views/modules/erf/expApplyList.vue
index 9c4c0eb..aba4c0d 100644
--- a/src/views/modules/erf/expApplyList.vue
+++ b/src/views/modules/erf/expApplyList.vue
@@ -637,6 +637,7 @@
 <script>
 import { searchExpApplyList, submitExpApply, deleteExpApply, withdrawExpApply, cancelExpApply, copyExpApply, getSubmitApprovers, getFlowStatus, getTriConfirmList, confirmSample, saveRemark } from '@/api/erf/erf'
 import { getBuList } from '@/api/factory/site'
+import { queryOss } from '@/api/oss/oss'
 import ExpApplyForm from './components/expApplyForm.vue'
 import ExpProjectDetail from './components/expProjectDetail.vue'
 import ExpTriConfirm from './components/expTriConfirm.vue'
@@ -888,33 +889,65 @@ export default {
      * 下达申请单 - 打开审批人确认弹窗
      */
     submitApply(row) {
-      // ✅ 如果是High Risk，先验证工序
-      if (row.experimentType === 'High Risk') {
-        console.log('🔍 检测到High Risk申请单，开始验证工序...')
-
-        // 通过API查询工序列表进行验证（不依赖子组件是否已加载）
-        this.validateHighRiskProcessByApi(row.applyNo).then(isValid => {
-          if (!isValid) {
-            console.log('❌ High Risk验证失败，终止下达')
-            this.$alert('High Risk申请单必须至少有一条完整的工序（包含车间、质量、技术三个负责人）才能下达', '操作提示', {
-              confirmButtonText: '确定',
-              type: 'warning'
-            })
-            return
-          }
+      // 第一步：所有申请单都必须验证附件
+      console.log('🔍 开始验证附件...')
+      this.validateAttachmentByApi(row.applyNo).then(hasAttachment => {
+        if (!hasAttachment) {
+          this.$alert('下达前必须至少上传一个附件', '操作提示', {
+            confirmButtonText: '确定',
+            type: 'warning'
+          })
+          return
+        }
 
-          console.log('✅ High Risk验证通过，继续下达流程')
-          // 验证通过后继续下达流程
+        // 第二步：如果是High Risk，继续验证工序
+        if (row.experimentType === 'High Risk') {
+          this.validateHighRiskProcessByApi(row.applyNo).then(isValid => {
+            if (!isValid) {
+              this.$alert('High Risk申请单必须至少有一条完整的工序（包含车间、质量、技术三个负责人）才能下达', '操作提示', {
+                confirmButtonText: '确定',
+                type: 'warning'
+              })
+              return
+            }
+
+            this.proceedSubmit(row)
+          }).catch(error => {
+            this.$message.error('验证工序失败，请重试')
+          })
+        } else {
+          // Low Risk 附件验证通过后直接下达
           this.proceedSubmit(row)
+        }
+      }).catch(error => {
+        this.$message.error('验证附件失败，请重试')
+      })
+    },
+
+    /**
+     * 通过API验证申请单是否已上传附件
+     *
+     * @param {String} applyNo 申请单号
+     * @return {Promise<Boolean>} 验证结果
+     */
+    validateAttachmentByApi(applyNo) {
+      return new Promise((resolve, reject) => {
+        queryOss({
+          orderRef1: 'ERF',
+          orderRef2: applyNo,
+          orderRef6: 'EXP_APPLY'
+        }).then(({data}) => {
+          if (data && data.code === 0) {
+            const fileList = data.rows || []
+            console.log('📎 查询到附件数量:', fileList.length)
+            resolve(fileList.length > 0)
+          } else {
+            reject(new Error(data.msg || '查询附件列表失败'))
+          }
         }).catch(error => {
-          console.error('❌ 验证工序异常:', error)
-          this.$message.error('验证工序失败，请重试')
+          reject(error)
         })
-      } else {
-        // 非High Risk直接下达
-        console.log('📝 Low Risk申请单，直接下达')
-        this.proceedSubmit(row)
-      }
+      })
     },
 
     /**