diff --git a/web-vue/src/components/FileTable.vue b/web-vue/src/components/FileTable.vue
index 38be80d..db8b885 100644
--- a/web-vue/src/components/FileTable.vue
+++ b/web-vue/src/components/FileTable.vue
@@ -175,7 +175,7 @@ const formatDate = (date) => {
 const canPreview = (file) => {
   if (file.type === 'folder') return false
   const ext = file.name.split('.').pop()?.toLowerCase()
-  return ['jpg', 'jpeg', 'png', 'gif', 'webp', 'svg', 'pdf', 'txt', 'md', 'json', 'xml', 'log', 'js', 'ts', 'vue', 'java', 'py', 'css', 'html'].includes(ext)
+  return ['jpg', 'jpeg', 'png', 'gif', 'webp', 'svg', 'pdf', 'txt', 'md', 'json', 'xml', 'log', 'js', 'ts', 'vue', 'java', 'py', 'css', 'html', 'docx', 'xlsx', 'pptx', 'doc', 'xls', 'ppt', 'ofd'].includes(ext)
 }
 </script>
 
diff --git a/web-vue/src/components/PreviewDialog.vue b/web-vue/src/components/PreviewDialog.vue
index 34c5674..c94341e 100644
--- a/web-vue/src/components/PreviewDialog.vue
+++ b/web-vue/src/components/PreviewDialog.vue
@@ -4,12 +4,18 @@
     :title="previewFile?.name || '预览'"
     width="80%"
     top="5vh"
-    class="custom-dialog"
+    class="custom-dialog preview-dialog"
   >
     <div class="preview-content">
       <img v-if="isImage" :src="previewUrl" class="preview-image" />
       <iframe v-else-if="isPdf" :src="previewUrl" class="preview-iframe" />
       <pre v-else-if="isText" class="preview-text">{{ previewContent }}</pre>
+      <div v-else-if="isOffice" ref="officeViewer" class="preview-office">
+        <div v-if="!jitViewerLoaded" class="preview-loading">
+          <el-icon class="is-loading" :size="32"><Loading /></el-icon>
+          <p>正在加载预览组件...</p>
+        </div>
+      </div>
       <div v-else class="preview-unsupported">
         <el-icon :size="64"><Document /></el-icon>
         <p>此文件类型暂不支持预览</p>
@@ -23,8 +29,8 @@
 </template>
 
 <script setup>
-import { computed } from 'vue'
-import { Document, Download } from '@element-plus/icons-vue'
+import { computed, ref, watch, nextTick } from 'vue'
+import { Document, Download, Loading } from '@element-plus/icons-vue'
 
 const props = defineProps({
   modelValue: Boolean,
@@ -40,6 +46,9 @@ const visible = computed({
   set: (v) => emit('update:modelValue', v)
 })
 
+const officeViewer = ref(null)
+const jitViewerLoaded = ref(false)
+
 const isImage = computed(() => {
   if (!props.previewFile) return false
   const ext = props.previewFile.name.split('.').pop()?.toLowerCase()
@@ -56,6 +65,70 @@ const isText = computed(() => {
   const ext = props.previewFile.name.split('.').pop()?.toLowerCase()
   return ['txt', 'md', 'json', 'xml', 'log', 'js', 'ts', 'vue', 'java', 'py', 'css', 'html'].includes(ext)
 })
+
+const isOffice = computed(() => {
+  if (!props.previewFile) return false
+  const ext = props.previewFile.name.split('.').pop()?.toLowerCase()
+  return ['docx', 'xlsx', 'pptx', 'doc', 'xls', 'ppt', 'ofd'].includes(ext)
+})
+
+// 加载 jit-viewer 脚本
+const loadJitViewer = () => {
+  if (window.jitView) {
+    jitViewerLoaded.value = true
+    return
+  }
+  
+  const script = document.createElement('script')
+  script.src = 'https://cdn.jsdelivr.net/npm/jit-viewer@latest/dist/jit-viewer.min.js'
+  script.onload = () => {
+    jitViewerLoaded.value = true
+    initOfficeViewer()
+  }
+  script.onerror = () => {
+    jitViewerLoaded.value = false
+  }
+  document.head.appendChild(script)
+}
+
+// 初始化 Office 预览
+const initOfficeViewer = async () => {
+  if (!officeViewer.value || !props.previewUrl) return
+  
+  await nextTick()
+  
+  // 使用 jit-viewer 预览
+  if (window.jitView) {
+    officeViewer.value.innerHTML = ''
+    const viewer = document.createElement('div')
+    viewer.style.width = '100%'
+    viewer.style.height = '70vh'
+    officeViewer.value.appendChild(viewer)
+    
+    try {
+      window.jitView(viewer, {
+        url: props.previewUrl,
+        fileType: props.previewFile?.name.split('.').pop()?.toLowerCase()
+      })
+    } catch (e) {
+      officeViewer.value.innerHTML = '<div class="preview-error">预览加载失败，请下载后查看</div>'
+    }
+  }
+}
+
+// 监听弹窗显示和文件变化
+watch(() => props.modelValue, (val) => {
+  if (val && isOffice.value) {
+    jitViewerLoaded.value = false
+    loadJitViewer()
+  }
+})
+
+watch(() => props.previewUrl, (val) => {
+  if (val && isOffice.value && props.modelValue) {
+    initOfficeViewer()
+  }
+})
 </script>
 
 <style scoped>
@@ -93,6 +166,35 @@ const isText = computed(() => {
   word-break: break-all;
 }
 
+.preview-office {
+  width: 100%;
+  height: 70vh;
+  background: #fff;
+}
+
+.preview-loading {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  justify-content: center;
+  height: 100%;
+  color: #909399;
+}
+
+.preview-loading p {
+  margin-top: 12px;
+  font-size: 14px;
+}
+
+.preview-error {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  height: 100%;
+  color: #f56c6c;
+  font-size: 14px;
+}
+
 .preview-unsupported {
   text-align: center;
   color: #909399;
@@ -102,4 +204,13 @@ const isText = computed(() => {
   margin: 16px 0;
   font-size: 14px;
 }
+
+.is-loading {
+  animation: rotating 2s linear infinite;
+}
+
+@keyframes rotating {
+  from { transform: rotate(0deg); }
+  to { transform: rotate(360deg); }
+}
 </style>
diff --git a/web-vue/src/views/files/index.vue b/web-vue/src/views/files/index.vue
index a21d305..ed1c49d 100644
--- a/web-vue/src/views/files/index.vue
+++ b/web-vue/src/views/files/index.vue
@@ -269,7 +269,7 @@ const formatDate = (date) => {
 const canPreview = (file) => {
   if (file.type === 'folder') return false
   const ext = file.name.split('.').pop()?.toLowerCase()
-  return ['jpg', 'jpeg', 'png', 'gif', 'webp', 'svg', 'pdf', 'txt', 'md'].includes(ext)
+  return ['jpg', 'jpeg', 'png', 'gif', 'webp', 'svg', 'pdf', 'txt', 'md', 'docx', 'xlsx', 'pptx', 'doc', 'xls', 'ppt', 'ofd'].includes(ext)
 }
 
 // 分页