diff --git a/src/views/lecturer/FinalDraft.vue b/src/views/lecturer/FinalDraft.vue
index 86d083d6..bfc4125f 100644
--- a/src/views/lecturer/FinalDraft.vue
+++ b/src/views/lecturer/FinalDraft.vue
@@ -230,7 +230,7 @@ export default {
               multiple>
               <i class="el-icon-upload"></i>
               <div class="el-upload__text">将文件拖到此处，或<em>点击上传</em></div>
-              <div class="el-upload__tip" slot="tip">请上传解密后的文件，仅支持上传ppt，pptx，pdf格式文件</div>
+              <div class="el-upload__tip" slot="tip">请上传解密后的文件，仅支持上传ppt、pptx、pdf格式文件</div>
             </el-upload>
           </el-form-item>
           <el-form-item>
diff --git a/src/views/lecturer/FirstDraft.vue b/src/views/lecturer/FirstDraft.vue
index 152614da..e8ed2bca 100644
--- a/src/views/lecturer/FirstDraft.vue
+++ b/src/views/lecturer/FirstDraft.vue
@@ -236,7 +236,7 @@ export default {
                 multiple>
                 <i class="el-icon-upload"></i>
                 <div class="el-upload__text">将文件拖到此处，或<em>点击上传</em></div>
-                <div class="el-upload__tip" slot="tip">请上传解密后的文件，仅支持上传ppt，pptx，pdf格式文件</div>
+                <div class="el-upload__tip" slot="tip">请上传解密后的文件，仅支持上传ppt、pptx、pdf格式文件</div>
               </el-upload>
           </el-form-item>
           <el-form-item>
diff --git a/src/views/lecturer/TwoFinal.vue b/src/views/lecturer/TwoFinal.vue
index 2599f8f0..06666aa6 100644
--- a/src/views/lecturer/TwoFinal.vue
+++ b/src/views/lecturer/TwoFinal.vue
@@ -232,7 +232,7 @@ export default {
               multiple>
               <i class="el-icon-upload"></i>
               <div class="el-upload__text">将文件拖到此处，或<em>点击上传</em></div>
-              <div class="el-upload__tip" slot="tip">请上传解密后的文件，仅支持上传ppt，pptx，pdf格式文件</div>
+              <div class="el-upload__tip" slot="tip">请上传解密后的文件，仅支持上传ppt、pptx、pdf格式文件</div>
             </el-upload>
           </el-form-item>
           <el-form-item>