diff --git a/docs/source/tts/PPTTS.md b/docs/source/tts/PPTTS.md
index c8534cd32..ef0baa07d 100644
--- a/docs/source/tts/PPTTS.md
+++ b/docs/source/tts/PPTTS.md
@@ -1,5 +1,7 @@
 ([简体中文](./PPTTS_cn.md)|English)
 
+# PPTTS
+
 - [1. Introduction](#1)
 - [2. Characteristic](#2)
 - [3. Benchmark](#3)