diff --git a/src/views/modules/erf/components/erfAttachmentManager.vue b/src/views/modules/erf/components/erfAttachmentManager.vue
index ea5f185..bd76344 100644
--- a/src/views/modules/erf/components/erfAttachmentManager.vue
+++ b/src/views/modules/erf/components/erfAttachmentManager.vue
@@ -165,6 +165,11 @@ export default {
       type: String,
       required: true
     },
+    // 工单号（写入sys_oss.order_ref4）
+    workOrderNo: {
+      type: String,
+      default: ''
+    },
     createdBy: {
       type: String,
       default: ''
@@ -191,6 +196,7 @@ export default {
       ossForm: {
         orderRef1: 'ERF', // 模块标识
         orderRef2: '', // 试验单号
+        orderRef4: '', // 工单号
         orderRef6: 'EXP_APPLY', // 业务类型标识
         remark: ''
       },
@@ -263,6 +269,7 @@ export default {
       })
       this.fileList = []
       this.ossForm.orderRef2 = this.applyNo
+      this.ossForm.orderRef4 = this.workOrderNo || ''
       this.ossForm.remark = ''
       this.ossVisible = true
       this.pasteImageCounter = 0
@@ -359,6 +366,7 @@ export default {
       }
       formData.append('orderRef1', 'ERF')
       formData.append('orderRef2', this.ossForm.orderRef2)
+      formData.append('orderRef4', this.ossForm.orderRef4)
       formData.append('orderRef6', 'EXP_APPLY')
       formData.append('createdBy', this.createdBy)
       formData.append('orderRef5', this.ossForm.remark)
diff --git a/src/views/modules/erf/expApplyList.vue b/src/views/modules/erf/expApplyList.vue
index 730f81a..229acb7 100644
--- a/src/views/modules/erf/expApplyList.vue
+++ b/src/views/modules/erf/expApplyList.vue
@@ -294,6 +294,7 @@
           v-if="currentRow.applyNo"
           ref="attachmentManager"
           :apply-no="currentRow.applyNo"
+          :work-order-no="currentRow.workOrderNo"
           :created-by="currentRow.projectLeader"
           :disabled="false"
           :height="detailHeight">