diff --git a/src/components/FileUpload/index.vue b/src/components/FileUpload/index.vue
index c8a08e0..683a731 100644
--- a/src/components/FileUpload/index.vue
+++ b/src/components/FileUpload/index.vue
@@ -35,11 +35,20 @@
       <li v-for="(file, index) in fileList" :key="file.uid" class="el-upload-list__item ele-upload-list__item-content">
         <span class="el-icon-document"> {{ getFileName(file.name) }} </span>
         <div class="ele-upload-list__item-content-action">
+          <el-link v-if="isImageFile(file)" type="primary" :underline="false" @click="handlePreview(file)">预览</el-link>
           <el-link type="primary" :underline="false" @click="handleDownload(file)">下载</el-link>
           <el-link type="danger" v-if="!disabled" :underline="false" @click="handleDelete(index)">删除</el-link>
         </div>
       </li>
     </transition-group>
+
+    <el-image-viewer
+      v-if="previewVisible"
+      :url-list="previewUrlList"
+      :initial-index="previewIndex"
+      teleported
+      @close="previewVisible = false"
+    />
   </div>
 </template>
 
@@ -47,6 +56,7 @@
 import { propTypes } from '@/utils/propTypes';
 import { delOss, listByIds } from '@/api/system/oss';
 import { globalHeaders } from '@/utils/request';
+import { isImageFileName } from '@/utils/ossPreview';
 
 const props = defineProps({
   modelValue: {
@@ -75,6 +85,9 @@ const uploadFileUrl = ref(baseUrl + '/resource/oss/upload'); // 上传文件服
 const headers = ref(globalHeaders());
 
 const fileList = ref<any[]>([]);
+const previewVisible = ref(false);
+const previewUrlList = ref<string[]>([]);
+const previewIndex = ref(0);
 const showTip = computed(() => props.isShowTip && (props.fileType || props.fileSize));
 
 const fileUploadRef = ref<ElUploadInstance>();
@@ -183,6 +196,18 @@ const handleDownload = (file: any) => {
   }
 };
 
+const isImageFile = (file: any) => isImageFileName(file.name);
+
+const handlePreview = (file: any) => {
+  const imageFiles = fileList.value.filter((item) => isImageFile(item) && item.url);
+  previewUrlList.value = imageFiles.map((item) => item.url);
+  previewIndex.value = Math.max(
+    imageFiles.findIndex((item) => item.url === file.url),
+    0
+  );
+  previewVisible.value = true;
+};
+
 // 删除文件
 const handleDelete = (index: number) => {
   const ossId = fileList.value[index].ossId;
diff --git a/src/components/OssFilePreview/index.vue b/src/components/OssFilePreview/index.vue
new file mode 100644
index 0000000..e9e9f1b
--- /dev/null
+++ b/src/components/OssFilePreview/index.vue
@@ -0,0 +1,164 @@
+<template>
+  <div v-loading="loading" class="oss-file-preview">
+    <div v-if="imageFiles.length" class="oss-file-preview__images">
+      <div v-for="(file, index) in imageFiles" :key="file.ossId || index" class="oss-file-preview__item">
+        <el-image
+          :src="file.url"
+          fit="cover"
+          :style="{ width: thumbSize, height: thumbSize }"
+          :preview-src-list="imagePreviewList"
+          :initial-index="index"
+          preview-teleported
+        >
+          <template #error>
+            <div class="oss-file-preview__error">
+              <el-icon><picture-filled /></el-icon>
+            </div>
+          </template>
+        </el-image>
+        <span v-if="showFileName" class="oss-file-preview__name" :title="getDisplayName(file)">{{ getDisplayName(file) }}</span>
+      </div>
+    </div>
+
+    <ul v-if="otherFiles.length && !imageOnly" class="oss-file-preview__files">
+      <li v-for="file in otherFiles" :key="file.ossId" class="oss-file-preview__file-item">
+        <el-icon><document /></el-icon>
+        <el-link type="primary" :underline="false" @click="handleDownload(file)">{{ getDisplayName(file) }}</el-link>
+      </li>
+    </ul>
+
+    <span v-if="!loading && !fileList.length" class="oss-file-preview__empty">{{ emptyText }}</span>
+  </div>
+</template>
+
+<script setup lang="ts">
+import { listByIds } from '@/api/system/oss';
+import type { OssVO } from '@/api/system/oss/types';
+import { isImageOssFile, parseOssIds } from '@/utils/ossPreview';
+import { propTypes } from '@/utils/propTypes';
+
+const props = defineProps({
+  /** OSS 文件 ID，支持逗号分隔字符串、单个 ID 或 ID 数组 */
+  ossIds: {
+    type: [String, Number, Array],
+    default: ''
+  },
+  /** 缩略图尺寸 */
+  thumbSize: propTypes.string.def('80px'),
+  /** 是否仅展示图片 */
+  imageOnly: propTypes.bool.def(false),
+  /** 是否显示文件名 */
+  showFileName: propTypes.bool.def(false),
+  /** 无附件时的提示文案 */
+  emptyText: propTypes.string.def('暂无附件')
+});
+
+const { proxy } = getCurrentInstance() as ComponentInternalInstance;
+
+const loading = ref(false);
+const fileList = ref<OssVO[]>([]);
+
+const imageFiles = computed(() => fileList.value.filter((file) => isImageOssFile(file)));
+const otherFiles = computed(() => fileList.value.filter((file) => !isImageOssFile(file)));
+const imagePreviewList = computed(() => imageFiles.value.map((file) => file.url));
+
+const getDisplayName = (file: OssVO) => file.originalName || file.fileName || '未命名文件';
+
+const loadFiles = async (value?: string | number | Array<string | number>) => {
+  const ids = parseOssIds(value);
+  if (!ids.length) {
+    fileList.value = [];
+    return;
+  }
+  loading.value = true;
+  try {
+    const res = await listByIds(ids.join(','));
+    fileList.value = res.data || [];
+  } catch (error) {
+    console.error('加载附件预览失败:', error);
+    fileList.value = [];
+  } finally {
+    loading.value = false;
+  }
+};
+
+const handleDownload = (file: OssVO) => {
+  if (file.ossId) {
+    proxy?.$download.oss(file.ossId);
+  }
+};
+
+watch(
+  () => props.ossIds,
+  (val) => {
+    loadFiles(val);
+  },
+  { immediate: true }
+);
+</script>
+
+<style lang="scss" scoped>
+.oss-file-preview {
+  min-height: 32px;
+}
+
+.oss-file-preview__images {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 12px;
+}
+
+.oss-file-preview__item {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  gap: 4px;
+  max-width: 120px;
+}
+
+.oss-file-preview__name {
+  width: 100%;
+  font-size: 12px;
+  color: #606266;
+  text-align: center;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
+.oss-file-preview__error {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  width: 100%;
+  height: 100%;
+  color: #909399;
+  font-size: 24px;
+  background: #f5f7fa;
+}
+
+.oss-file-preview__files {
+  margin: 8px 0 0;
+  padding: 0;
+  list-style: none;
+}
+
+.oss-file-preview__file-item {
+  display: flex;
+  align-items: center;
+  gap: 6px;
+  line-height: 28px;
+  color: #606266;
+}
+
+.oss-file-preview__empty {
+  color: #909399;
+  font-size: 13px;
+}
+
+:deep(.el-image) {
+  border-radius: 4px;
+  border: 1px solid #ebeef5;
+  cursor: pointer;
+}
+</style>
diff --git a/src/utils/ossPreview.ts b/src/utils/ossPreview.ts
new file mode 100644
index 0000000..06a4dd1
--- /dev/null
+++ b/src/utils/ossPreview.ts
@@ -0,0 +1,37 @@
+/** 支持预览的图片扩展名 */
+export const IMAGE_EXTENSIONS = ['png', 'jpg', 'jpeg', 'gif', 'webp', 'bmp'];
+
+/** 根据文件名判断是否为可预览图片 */
+export function isImageFileName(fileName?: string): boolean {
+  if (!fileName) {
+    return false;
+  }
+  const ext = fileName.split('.').pop()?.toLowerCase() || '';
+  return IMAGE_EXTENSIONS.includes(ext);
+}
+
+/** 根据 OSS 文件信息判断是否为可预览图片 */
+export function isImageOssFile(file?: { fileSuffix?: string; originalName?: string; name?: string; url?: string }): boolean {
+  if (!file) {
+    return false;
+  }
+  if (file.fileSuffix) {
+    const suffix = file.fileSuffix.startsWith('.') ? file.fileSuffix.slice(1) : file.fileSuffix;
+    return IMAGE_EXTENSIONS.includes(suffix.toLowerCase());
+  }
+  return isImageFileName(file.originalName || file.name);
+}
+
+/** 从 ossId 字符串或数组中解析 ID 列表 */
+export function parseOssIds(value?: string | number | Array<string | number>): string[] {
+  if (value === undefined || value === null || value === '') {
+    return [];
+  }
+  if (Array.isArray(value)) {
+    return value.map((item) => String(item)).filter(Boolean);
+  }
+  return String(value)
+    .split(',')
+    .map((item) => item.trim())
+    .filter(Boolean);
+}
diff --git a/src/views/oa/crm/crmMailingApply/edit.vue b/src/views/oa/crm/crmMailingApply/edit.vue
index dd7fafa..b7b0935 100644
--- a/src/views/oa/crm/crmMailingApply/edit.vue
+++ b/src/views/oa/crm/crmMailingApply/edit.vue
@@ -27,7 +27,7 @@
         <el-row :gutter="20">
           <el-col :span="12">
             <el-form-item label="邮寄申请编号" prop="mailingApplyCode">
-              <el-input v-model="form.mailingApplyCode" placeholder="自动生成邮寄申请编号" readonly>
+              <el-input v-model="form.mailingApplyCode" placeholder="自动生成邮寄申请编号" :disabled="!isFormEditable" >
                 <template #append>
                   <el-button type="primary" @click="generateMailingApplyCode" :disabled="isCodeGenerated">生成邮寄申请编号</el-button>
                 </template>
@@ -155,7 +155,7 @@
                 :disabled="!isFormEditable"
                 :isShowTip="true"
               />
-              <div style="color: #f56c6c; font-size: 12px; margin-top: 5px">提示：请上传邮寄实物图片和快递单截图</div>
+              <div style="color: #f56c6c; font-size: 12px; margin-top: 5px">提示：请上传邮寄实物图片和快递单截图，图片可点击预览</div>
             </el-form-item>
           </el-col>
           <el-col :span="12">
@@ -362,6 +362,7 @@ const initFormData: CrmMailingApplyForm = {
 const data = reactive<{ form: CrmMailingApplyForm; rules: any }>({
   form: { ...initFormData },
   rules: {
+    mailingApplyCode: [{ required: true, message: '邮寄申请编号不能为空', trigger: 'blur' }],
     applicationDate: [{ required: true, message: '申请日期不能为空', trigger: 'blur' }],
     handlerId: [{ required: true, message: '经手人不能为空', trigger: 'change' }],
     province: [{ required: true, message: '省份不能为空', trigger: 'blur' }],
@@ -596,7 +597,7 @@ const submitForm = async (status: string, mode: boolean) => {
 
   try {
     if (status === 'draft') {
-      await mailingApplyFormRef.value.validateField(['applicationDate', 'handlerId', 'province', 'weight', 'mailingType', 'mailingFee', 'itemInfo']);
+      await mailingApplyFormRef.value.validateField(['mailingApplyCode', 'applicationDate', 'handlerId', 'province', 'weight', 'mailingType', 'mailingFee', 'itemInfo']);
     } else {
       await mailingApplyFormRef.value.validate();
     }