diff --git a/src/components/Upload/index.vue b/src/components/Upload/index.vue
index c8a2e04..179cb7a 100644
--- a/src/components/Upload/index.vue
+++ b/src/components/Upload/index.vue
@@ -18,6 +18,7 @@
 					<span class="flex-1 text-gray-700 truncate transition-colors duration-200 group-hover:text-blue-600">
 						{{ getFileName(file) }}
 					</span>
+					<el-icon class="mr-2 text-gray-400 transition-colors duration-200 group-hover:text-blue-500" @click.stop="handlePreview(file)"><View /></el-icon>
 					<el-icon class="text-gray-400 transition-colors duration-200 group-hover:text-blue-500"><Download /></el-icon>
 				</div>
 			</div>
@@ -69,6 +70,24 @@
 					<span class="file-name" style="flex: 1; font-size: 14px; color: #606266; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;">
 						{{ getFileName(file) }}
 					</span>
+					<el-button
+						type="primary"
+						link
+						size="small"
+						@click="handlePreview(file)"
+						style="margin-left: 4px;"
+					>
+						<el-icon><View /></el-icon>
+					</el-button>
+					<el-button
+						type="primary"
+						link
+						size="small"
+						@click="handleDownload(file)"
+						style="margin-left: 4px;"
+					>
+						<el-icon><Download /></el-icon>
+					</el-button>
 					<el-button
 						type="danger"
 						link
@@ -78,15 +97,6 @@
 					>
 						<el-icon><Delete /></el-icon>
 					</el-button>
-					<el-button
-						type="primary"
-						link
-						size="small"
-						@click="handlePreview(file)"
-						style="margin-left: 4px;"
-					>
-						<el-icon><Download /></el-icon>
-					</el-button>
 				</div>
 			</div>
 		</div>
@@ -124,15 +134,48 @@
 			</template>
 		</el-upload>
 	</div>
+	
+	<!-- 图片预览：使用 teleport + 最高 z-index 确保全屏 -->
+	<teleport to="body">
+		<div 
+			v-if="imagePreviewVisible" 
+			class="image-preview-overlay"
+			@click="imagePreviewVisible = false"
+		>
+			<img :src="imagePreviewUrl" class="image-preview-img" />
+			<button class="image-preview-close" @click.stop="imagePreviewVisible = false">✕</button>
+		</div>
+	</teleport>
+	
+	<!-- PDF预览：使用 teleport -->
+	<teleport to="body">
+		<el-dialog
+			v-model="pdfPreviewVisible"
+			title="文件预览"
+			:top="'5vh'"
+			width="90%"
+			:center-dialog="true"
+			:z-index="9999"
+			:close-on-click-modal="true"
+			append-to-body
+			class="pdf-preview-teleport"
+		>
+			<iframe 
+				:src="pdfPreviewUrl" 
+				style="width: 100%; height: 80vh; border: none;" 
+			/>
+		</el-dialog>
+	</teleport>
 </template>
 
 <script setup lang="ts" name="upload-file">
 import { useMessage } from '/@/hooks/message';
 import { Session } from '/@/utils/storage';
 import other from '/@/utils/other';
+import request from '/@/utils/request';
 import { useI18n } from 'vue-i18n';
 import { ref, computed, watch } from 'vue';
-import { Document, Download, Upload, Delete } from '@element-plus/icons-vue';
+import { Document, Download, Upload, Delete, View } from '@element-plus/icons-vue';
 
 // 定义基础URL
 const baseUrl = import.meta.env.VITE_API_URL || '';
@@ -207,6 +250,11 @@ const props = defineProps({
 		type: String,
 		default: '/admin/sys-file/upload',
 	},
+	// 自定义下载/预览URL，如果不传则根据uploadFileUrl自动推导
+	downloadFileUrl: {
+		type: String,
+		default: '',
+	},
 	type: {
 		type: String,
 		default: 'default',
@@ -240,6 +288,14 @@ const uploadList = ref<UploadFileItem[]>([]);
 const fileUpload = ref();
 const { t } = useI18n();
 
+// 图片预览状态
+const imagePreviewVisible = ref(false);
+const imagePreviewUrl = ref('');
+
+// PDF预览状态
+const pdfPreviewVisible = ref(false);
+const pdfPreviewUrl = ref('');
+
 // 请求头处理
 const headers = computed(() => {
 	return {
@@ -248,6 +304,22 @@ const headers = computed(() => {
 	};
 });
 
+// 推导下载URL：优先使用传入的downloadFileUrl，否则根据uploadFileUrl自动推导
+const downloadBaseUrl = computed(() => {
+	if (props.downloadFileUrl) {
+		return props.downloadFileUrl;
+	}
+	// 根据uploadFileUrl自动推导下载URL
+	if (props.uploadFileUrl.includes('/purchase/purchasingfiles/')) {
+		return '/purchase/purchasingfiles/downloadById';
+	}
+	if (props.uploadFileUrl.includes('/admin/sys-file/')) {
+		return '/admin/sys-file/download';
+	}
+	// 默认返回空字符串，使用URL直接下载
+	return '';
+});
+
 // 请求参数处理
 const formData = computed(() => {
 	return Object.assign(props.data, { dir: props.dir });
@@ -376,11 +448,12 @@ const handleRemove = (file: { name?: string; id?: string; url?: string }) => {
 	emit('change', listToString(fileList.value), fileList.value);
 };
 
-const handlePreview = (file: any) => {
-	// 优先使用文件ID下载（采购附件使用 downloadById 接口）
-	if (file.id) {
-		// 判断是否是采购附件（通过 fileType 判断）
-		const downloadUrl = `/purchase/purchasingfiles/downloadById?fileId=${encodeURIComponent(file.id)}`;
+const handleDownload = (file: any) => {
+	// 优先使用文件ID下载（如果有自定义下载URL）
+	if (file.id && downloadBaseUrl.value) {
+		const downloadUrl = downloadBaseUrl.value.includes('?') 
+			? `${downloadBaseUrl.value}&fileId=${encodeURIComponent(file.id)}`
+			: `${downloadBaseUrl.value}?fileId=${encodeURIComponent(file.id)}`;
 		other.downBlobFile(downloadUrl, {}, file.name || file.fileTitle || '文件');
 		return;
 	}
@@ -392,6 +465,91 @@ const handlePreview = (file: any) => {
 	useMessage().warning('无法获取文件下载信息');
 };
 
+const handlePreview = async (file: any) => {
+	// 获取文件URL
+	let fileUrl = '';
+	if (file.id && downloadBaseUrl.value) {
+		// 使用配置的下载URL
+		fileUrl = downloadBaseUrl.value.includes('?') 
+			? `${downloadBaseUrl.value}&fileId=${encodeURIComponent(file.id)}`
+			: `${downloadBaseUrl.value}?fileId=${encodeURIComponent(file.id)}`;
+	} else if (file.id) {
+		// 兼容旧的ID方式
+		fileUrl = `/purchase/purchasingfiles/downloadById?fileId=${encodeURIComponent(file.id)}`;
+	} else if (file.url) {
+		fileUrl = file.url;
+	} else {
+		useMessage().warning('无法获取文件信息');
+		return;
+	}
+
+	// 获取文件名：优先使用 name，其次从 url 提取
+	let fileName = file.name || file.fileTitle || '';
+	if (!fileName && file.url) {
+		// 从 URL 中提取文件名
+		try {
+			const urlObj = new URL(file.url, window.location.origin);
+			const nameFromUrl = urlObj.searchParams.get('originalFileName') || urlObj.searchParams.get('fileName');
+			if (nameFromUrl) {
+				fileName = nameFromUrl;
+			}
+		} catch {}
+	}
+	if (!fileName) {
+		fileName = '文件';
+	}
+	
+	// 获取文件扩展名
+	const ext = fileName.split('.').pop()?.toLowerCase() || '';
+	
+	// 判断是否是图片
+	const imageExts = ['png', 'jpg', 'jpeg', 'gif', 'bmp', 'webp'];
+	// 判断是否是PDF
+	const isPdf = ext === 'pdf';
+	
+	// 检查是否是图片
+	const isImage = imageExts.includes(ext);
+	
+	try {
+		if (isImage) {
+			// 图片预览：使用 el-image-viewer（teleported 到 body，全屏显示）
+			const response = await request({
+				url: fileUrl,
+				method: 'get',
+				responseType: 'blob',
+			}) as unknown as Response;
+			if (!response || response.type === 'error') {
+				useMessage().error('获取文件失败');
+				return;
+			}
+			const blob = response as unknown as Blob;
+			imagePreviewUrl.value = window.URL.createObjectURL(blob);
+			imagePreviewVisible.value = true;
+		} else if (isPdf) {
+			// PDF预览：使用 el-dialog（append-to-body，全屏显示）
+			const response = await request({
+				url: fileUrl,
+				method: 'get',
+				responseType: 'blob',
+			}) as unknown as Response;
+			if (!response || response.type === 'error') {
+				useMessage().error('获取文件失败');
+				return;
+			}
+			const blob = response as unknown as Blob;
+			pdfPreviewUrl.value = window.URL.createObjectURL(blob);
+			pdfPreviewVisible.value = true;
+		} else {
+			// 其他类型文件，提示无法预览，只能下载
+			useMessage().warning('该文件类型暂不支持预览，请下载查看');
+			handleDownload(file);
+		}
+	} catch (error) {
+		console.error('预览失败:', error);
+		useMessage().error('预览失败');
+	}
+};
+
 // 添加 handleExceed 函数
 const handleExceed = () => {
 	useMessage().warning(`${t('excel.uploadLimit')} ${props.limit} ${t('excel.files')}`);
@@ -481,3 +639,62 @@ defineExpose({
 	submit,
 });
 </script>
+
+<style scoped>
+.w-full {
+  width: 100%;
+}
+.upload-file {
+  width: 100%;
+}
+.mb20 {
+  margin-bottom: 20px;
+}
+</style>
+
+<!-- 全局样式：图片预览遮罩（teleport 到 body，不受 scoped 限制） -->
+<style>
+.image-preview-overlay {
+	position: fixed;
+	top: 0;
+	left: 0;
+	width: 100vw;
+	height: 100vh;
+	background: rgba(0, 0, 0, 0.9);
+	display: flex;
+	justify-content: center;
+	align-items: center;
+	z-index: 99999;
+	cursor: pointer;
+}
+
+.image-preview-img {
+	max-width: 95%;
+	max-height: 95%;
+	object-fit: contain;
+}
+
+.image-preview-close {
+	position: absolute;
+	top: 20px;
+	right: 30px;
+	width: 40px;
+	height: 40px;
+	background: rgba(255, 255, 255, 0.2);
+	border: none;
+	border-radius: 50%;
+	color: #fff;
+	font-size: 24px;
+	cursor: pointer;
+	transition: background 0.3s;
+}
+
+.image-preview-close:hover {
+	background: rgba(255, 255, 255, 0.4);
+}
+
+/* PDF 预览对话框样式 */
+.pdf-preview-teleport .el-dialog__body {
+	padding: 0;
+}
+</style>