diff --git a/vocalldemo/index.html b/vocalldemo/index.html
index b376fe8..01b6131 100644
--- a/vocalldemo/index.html
+++ b/vocalldemo/index.html
@@ -239,11 +239,11 @@
         </div>
         <div style="flex: 1;display: flex;align-items: center;">
           <div class="page-small-title">音量</div>
-          <input class="input" id="volume" placeholder="语速" value="1" style="width: 120px;" />（0到1）
+          <input class="input" id="volume" placeholder="音量" value="1" style="width: 120px;" />（0到1）
         </div>
         <div style="flex: 1;display: flex;align-items: center;">
           <div class="page-small-title">循环次数</div>
-          <input class="input" id="repeatNum" placeholder="语速" value="3" style="width: 120px;" />
+          <input class="input" id="repeatNum" placeholder="循环次数" value="3" style="width: 120px;" />
         </div>
       </div>
       <div style="display: flex;margin: 10px 0 20px;">