diff --git a/src/components/PreviewFile/index.vue b/src/components/PreviewFile/index.vue
index 396dad5c..53112407 100644
--- a/src/components/PreviewFile/index.vue
+++ b/src/components/PreviewFile/index.vue
@@ -12,7 +12,7 @@
     <!--      :src="`/static/pdfjs/web/viewer.html?file=${filePath}`">-->
     <!--    </pdf>-->
     <video :src="`${OSSclientConfig.basePath}${filePath}`" style="width: 100%;height: 99%;" autoplay controls
-      v-else-if="fileType.indexOf('mp4') !== -1"></video>
+      controlsList="nodownload" v-else-if="fileType.indexOf('mp4') !== -1"></video>
     <iframe v-else
       :src="`/static/onlyOffice/viewer.html?url=${OSSclientConfig.basePath}${filePath}?onlyOffice_url=${onlyOffice_url}&type=${fileType}&title=${title}&documentType=${documentType}&userName=${currentUser}`"
       width="100%" height="100%" frameborder="0" crossorigin="anonymous" />
diff --git a/src/components/Preview_video/index.vue b/src/components/Preview_video/index.vue
index c00837d2..912ec187 100644
--- a/src/components/Preview_video/index.vue
+++ b/src/components/Preview_video/index.vue
@@ -2,7 +2,7 @@
   <el-dialog v-if="visible" :visible.sync="visible" :title="title" :fullscreen="true" append-to-body
     custom-class="base-dialog-wrapper" @close="handleClose">
     <div class="base-modal-body" style="border: 2px solid #ccc; padding: 10px">
-      <video :src="path" style="width: 100%;height: 99%;" autoplay controls></video>
+      <video :src="path" style="width: 100%;height: 99%;" autoplay controls controlsList="nodownload"></video>
     </div>
   </el-dialog>
 </template>