diff --git a/app/Http/Controllers/Api/DialogController.php b/app/Http/Controllers/Api/DialogController.php
index a2cadfe63..6824a0c13 100755
--- a/app/Http/Controllers/Api/DialogController.php
+++ b/app/Http/Controllers/Api/DialogController.php
@@ -9,6 +9,7 @@ use App\Models\WebSocketDialog;
 use App\Models\WebSocketDialogMsg;
 use App\Models\WebSocketDialogMsgRead;
 use App\Module\Base;
+use Carbon\Carbon;
 use Request;
 use Response;
 
@@ -349,6 +350,9 @@ class DialogController extends AbstractController
      * @apiName msg__detail
      *
      * @apiParam {Number} msg_id            消息ID
+     * @apiParam {String} only_update_at    仅获取update_at字段
+     * - no (默认)
+     * - yes
      *
      * @apiSuccess {Number} ret     返回状态码（1正确、0错误）
      * @apiSuccess {String} msg     返回信息（错误描述）
@@ -359,11 +363,20 @@ class DialogController extends AbstractController
         User::auth();
         //
         $msg_id = intval(Request::input('msg_id'));
+        $only_update_at = Request::input('only_update_at', 'no');
         //
         $dialogMsg = WebSocketDialogMsg::whereId($msg_id)->first();
         if (empty($dialogMsg)) {
             return Base::retError("文件不存在");
         }
+        //
+        if ($only_update_at == 'yes') {
+            return Base::retSuccess('success', [
+                'id' => $dialogMsg->id,
+                'update_at' => Carbon::parse($dialogMsg->updated_at)->toDateTimeString()
+            ]);
+        }
+        //
         $data = $dialogMsg->toArray();
         //
         if ($data['type'] == 'file') {
diff --git a/app/Http/Controllers/Api/FileController.php b/app/Http/Controllers/Api/FileController.php
index 05ee13379..edc340824 100755
--- a/app/Http/Controllers/Api/FileController.php
+++ b/app/Http/Controllers/Api/FileController.php
@@ -9,12 +9,11 @@ use App\Models\FileContent;
 use App\Models\FileLink;
 use App\Models\FileUser;
 use App\Models\User;
-use App\Models\WebSocketDialogMsg;
 use App\Module\Base;
 use App\Module\Ihttp;
+use Carbon\Carbon;
 use Illuminate\Support\Facades\DB;
 use Request;
-use Response;
 
 /**
  * @apiDefine file
@@ -383,7 +382,10 @@ class FileController extends AbstractController
      * @apiParam {Number|String} id
      * - Number: 文件ID（需要登录）
      * - String: 链接码（不需要登录，用于预览）
-     * @apiParam {String} down          直接下载
+     * @apiParam {String} only_update_at        仅获取update_at字段
+     * - no (默认)
+     * - yes
+     * @apiParam {String} down                  直接下载
      * - no: 浏览（默认）
      * - yes: 下载（office文件直接下载）
      *
@@ -395,6 +397,7 @@ class FileController extends AbstractController
     {
         $id = Request::input('id');
         $down = Request::input('down', 'no');
+        $only_update_at = Request::input('only_update_at', 'no');
         //
         if (Base::isNumber($id)) {
             User::auth();
@@ -409,6 +412,13 @@ class FileController extends AbstractController
             return Base::retError('参数错误');
         }
         //
+        if ($only_update_at == 'yes') {
+            return Base::retSuccess('success', [
+                'id' => $file->id,
+                'update_at' => Carbon::parse($file->updated_at)->toDateTimeString()
+            ]);
+        }
+        //
         $content = FileContent::whereFid($file->id)->orderByDesc('id')->first();
         return FileContent::formatContent($file, $content?->content, $down == 'yes');
     }
diff --git a/app/Http/Controllers/Api/ProjectController.php b/app/Http/Controllers/Api/ProjectController.php
index 2515486d7..28892a35d 100755
--- a/app/Http/Controllers/Api/ProjectController.php
+++ b/app/Http/Controllers/Api/ProjectController.php
@@ -1099,7 +1099,10 @@ class ProjectController extends AbstractController
      * @apiGroup project
      * @apiName task__filedetail
      *
-     * @apiParam {Number} file_id            文件ID
+     * @apiParam {Number} file_id           文件ID
+     * @apiParam {String} only_update_at    仅获取update_at字段
+     * - no (默认)
+     * - yes
      *
      * @apiSuccess {Number} ret     返回状态码（1正确、0错误）
      * @apiSuccess {String} msg     返回信息（错误描述）
@@ -1110,11 +1113,20 @@ class ProjectController extends AbstractController
         User::auth();
         //
         $file_id = intval(Request::input('file_id'));
+        $only_update_at = Request::input('only_update_at', 'no');
         //
         $file = ProjectTaskFile::find($file_id);
         if (empty($file)) {
             return Base::retError("文件不存在");
         }
+        //
+        if ($only_update_at == 'yes') {
+            return Base::retSuccess('success', [
+                'id' => $file->id,
+                'update_at' => Carbon::parse($file->updated_at)->toDateTimeString()
+            ]);
+        }
+        //
         $data = $file->toArray();
         $data['path'] = $file->getRawOriginal('path');
         //
diff --git a/resources/assets/js/components/OnlyOffice.vue b/resources/assets/js/components/OnlyOffice.vue
index e43ad89a1..9dc2f2e81 100644
--- a/resources/assets/js/components/OnlyOffice.vue
+++ b/resources/assets/js/components/OnlyOffice.vue
@@ -60,6 +60,7 @@ export default {
             type: Boolean,
             default: false
         },
+        documentKey: Function
     },
 
     data() {
@@ -91,10 +92,6 @@ export default {
         fileName() {
             return this.value.name;
         },
-
-        fileUpdatedAt() {
-            return this.value.updated_at ? $A.Date(this.value.updated_at, true) : '';
-        }
     },
 
     watch: {
@@ -108,8 +105,17 @@ export default {
                     this.loadIng--;
                     if (e !== null) {
                         $A.modalAlert("组件加载失败！");
+                        return;
+                    }
+                    if (!this.documentKey) {
+                        this.handleClose();
+                        return
+                    }
+                    const documentKey = this.documentKey();
+                    if (documentKey && documentKey.then) {
+                        documentKey.then(this.loadFile);
                     } else {
-                        this.loadFile()
+                        this.loadFile();
                     }
                 })
             },
@@ -130,7 +136,7 @@ export default {
             return type;
         },
 
-        loadFile() {
+        loadFile(keyAppend = '') {
             if (this.docEditor !== null) {
                 this.docEditor.destroyEditor();
                 this.docEditor = null;
@@ -152,7 +158,7 @@ export default {
             const config = {
                 "document": {
                     "fileType": this.fileType,
-                    "key": `${this.fileType}-${fileKey}-${this.fileUpdatedAt}`,
+                    "key": `${this.fileType}-${fileKey}-${keyAppend}`,
                     "title": fileName,
                     "url": `http://nginx/api/file/content/?id=${fileKey}&token=${this.userToken}`,
                 },
diff --git a/resources/assets/js/pages/manage/components/FileContent.vue b/resources/assets/js/pages/manage/components/FileContent.vue
index d3878abc7..618385703 100644
--- a/resources/assets/js/pages/manage/components/FileContent.vue
+++ b/resources/assets/js/pages/manage/components/FileContent.vue
@@ -52,7 +52,7 @@
                 </template>
                 <Flow v-else-if="file.type=='flow'" ref="myFlow" v-model="contentDetail" @saveData="handleClick('saveBefore')"/>
                 <Minder v-else-if="file.type=='mind'" ref="myMind" v-model="contentDetail" @saveData="handleClick('saveBefore')"/>
-                <OnlyOffice v-else-if="['word', 'excel', 'ppt'].includes(file.type)" v-model="contentDetail"/>
+                <OnlyOffice v-else-if="['word', 'excel', 'ppt'].includes(file.type)" v-model="contentDetail" :documentKey="documentKey"/>
                 <AceEditor v-else-if="['code', 'txt'].includes(file.type)" v-model="contentDetail.content" :ext="file.ext" @saveData="handleClick('saveBefore')"/>
             </div>
         </template>
@@ -330,6 +330,22 @@ export default {
             this.unsaveTip = false;
         },
 
+        documentKey() {
+            return new Promise(resolve => {
+                this.$store.dispatch("call", {
+                    url: 'file/content',
+                    data: {
+                        id: this.fileId,
+                        only_update_at: 'yes'
+                    },
+                }).then(({data}) => {
+                    resolve($A.Date(data.update_at, true))
+                }).catch(() => {
+                    resolve(0)
+                });
+            })
+        },
+
         formatName(file) {
             let {name, ext} = file;
             if (ext != '') {
diff --git a/resources/assets/js/pages/manage/components/FilePreview.vue b/resources/assets/js/pages/manage/components/FilePreview.vue
index 2d7b90fbf..061e1900f 100644
--- a/resources/assets/js/pages/manage/components/FilePreview.vue
+++ b/resources/assets/js/pages/manage/components/FilePreview.vue
@@ -29,7 +29,7 @@
                 </template>
                 <Flow v-else-if="file.type=='flow'" ref="myFlow" v-model="contentDetail" readOnly/>
                 <Minder v-else-if="file.type=='mind'" ref="myMind" v-model="contentDetail" readOnly/>
-                <OnlyOffice v-else-if="['word', 'excel', 'ppt'].includes(file.type)" v-model="contentDetail" :code="code" readOnly/>
+                <OnlyOffice v-else-if="['word', 'excel', 'ppt'].includes(file.type)" v-model="contentDetail" :code="code" :documentKey="documentKey" readOnly/>
                 <AceEditor v-else-if="['code', 'txt'].includes(file.type)" v-model="contentDetail.content" :ext="file.ext" readOnly/>
             </div>
         </template>
@@ -144,6 +144,22 @@ export default {
             })
         },
 
+        documentKey() {
+            return new Promise(resolve => {
+                this.$store.dispatch("call", {
+                    url: 'file/content',
+                    data: {
+                        id: this.code || this.file.id,
+                        only_update_at: 'yes'
+                    },
+                }).then(({data}) => {
+                    resolve($A.Date(data.update_at, true))
+                }).catch(() => {
+                    resolve(0)
+                });
+            })
+        },
+
         exportMenu(act) {
             switch (this.file.type) {
                 case 'mind':
diff --git a/resources/assets/js/pages/single/fileMsg.vue b/resources/assets/js/pages/single/fileMsg.vue
index 1dc61a3a2..19ae4f052 100644
--- a/resources/assets/js/pages/single/fileMsg.vue
+++ b/resources/assets/js/pages/single/fileMsg.vue
@@ -4,7 +4,7 @@
         <Loading v-if="loadIng > 0"/>
         <template v-else>
             <AceEditor v-if="isCode" v-model="codeContent" :ext="codeExt" class="view-editor" readOnly/>
-            <OnlyOffice v-else-if="isOffice" v-model="officeContent" :code="officeCode" readOnly/>
+            <OnlyOffice v-else-if="isOffice" v-model="officeContent" :code="officeCode" :documentKey="documentKey" readOnly/>
             <iframe v-else-if="isPreview" class="preview-iframe" :src="previewUrl"/>
             <div v-else class="no-support">{{$L('不支持单独查看此消息')}}</div>
         </template>
@@ -68,6 +68,10 @@ export default {
         },
     },
     computed: {
+        msgId() {
+            return $A.runNum(this.$route.params.id);
+        },
+
         title() {
             const {msg} = this.msgDetail;
             if (msg && msg.name) {
@@ -99,7 +103,6 @@ export default {
             return {
                 id: this.isOffice ? this.msgDetail.id : 0,
                 type: this.msgDetail.msg.ext,
-                updated_at: this.msgDetail.created_at,
                 name: this.title,
             }
         },
@@ -122,15 +125,14 @@ export default {
     },
     methods: {
         getInfo() {
-            let msg_id = $A.runNum(this.$route.params.id);
-            if (msg_id <= 0) {
+            if (this.msgId <= 0) {
                 return;
             }
             this.loadIng++;
             this.$store.dispatch("call", {
                 url: 'dialog/msg/detail',
                 data: {
-                    msg_id,
+                    msg_id: this.msgId,
                 },
             }).then(({data}) => {
                 this.loadIng--;
@@ -146,6 +148,21 @@ export default {
                     }
                 });
             });
+        },
+        documentKey() {
+            return new Promise(resolve => {
+                this.$store.dispatch("call", {
+                    url: 'dialog/msg/detail',
+                    data: {
+                        msg_id: this.msgId,
+                        only_update_at: 'yes'
+                    },
+                }).then(({data}) => {
+                    resolve($A.Date(data.update_at, true))
+                }).catch(() => {
+                    resolve(0)
+                });
+            });
         }
     }
 }
diff --git a/resources/assets/js/pages/single/fileTask.vue b/resources/assets/js/pages/single/fileTask.vue
index 129831cdf..433de83ad 100644
--- a/resources/assets/js/pages/single/fileTask.vue
+++ b/resources/assets/js/pages/single/fileTask.vue
@@ -4,7 +4,7 @@
         <Loading v-if="loadIng > 0"/>
         <template v-else>
             <AceEditor v-if="isCode" v-model="codeContent" :ext="codeExt" class="view-editor" readOnly/>
-            <OnlyOffice v-else-if="isOffice" v-model="officeContent" :code="officeCode" readOnly/>
+            <OnlyOffice v-else-if="isOffice" v-model="officeContent" :code="officeCode" :documentKey="documentKey" readOnly/>
             <iframe v-else-if="isPreview" class="preview-iframe" :src="previewUrl"/>
             <div v-else class="no-support">{{$L('不支持单独查看此消息')}}</div>
         </template>
@@ -68,6 +68,10 @@ export default {
         },
     },
     computed: {
+        fileId() {
+            return $A.runNum(this.$route.params.id);
+        },
+
         title() {
             const {name} = this.fileDetail;
             if (name) {
@@ -99,8 +103,7 @@ export default {
             return {
                 id: this.isOffice ? this.fileDetail.id : 0,
                 type: this.fileDetail.ext,
-                updated_at: this.fileDetail.created_at,
-                name: this.title
+                name: this.title,
             }
         },
         officeCode() {
@@ -122,15 +125,14 @@ export default {
     },
     methods: {
         getInfo() {
-            let file_id = $A.runNum(this.$route.params.id);
-            if (file_id <= 0) {
+            if (this.fileId <= 0) {
                 return;
             }
             this.loadIng++;
             this.$store.dispatch("call", {
                 url: 'project/task/filedetail',
                 data: {
-                    file_id,
+                    file_id: this.fileId,
                 },
             }).then(({data}) => {
                 this.loadIng--;
@@ -146,6 +148,21 @@ export default {
                     }
                 });
             });
+        },
+        documentKey() {
+            return new Promise(resolve => {
+                this.$store.dispatch("call", {
+                    url: 'project/task/filedetail',
+                    data: {
+                        file_id: this.fileId,
+                        only_update_at: 'yes'
+                    },
+                }).then(({data}) => {
+                    resolve($A.Date(data.update_at, true))
+                }).catch(() => {
+                    resolve(0)
+                });
+            })
         }
     }
 }