diff --git a/hetu-docs/en/index.md b/hetu-docs/en/index.md
index 36052a54a..34a487e1a 100644
--- a/hetu-docs/en/index.md
+++ b/hetu-docs/en/index.md
@@ -121,7 +121,6 @@ headless: true
 - [SQL Language]("#")
     - [Data Types]({{< relref "./docs/language/types.md" >}})
     - [Reserved Keywords]({{< relref "./docs/language/reserved.md" >}})
-    - [Legacy and New Timestamp]({{< relref "./docs/language/timestamp.md" >}})
 
 - [SQL Statement Syntax]({{< relref "./docs/sql/_index.md" >}})
     - [ALTER SCHEMA]({{< relref "./docs/sql/alter-schema.md" >}})
diff --git a/hetu-docs/zh/index.md b/hetu-docs/zh/index.md
index 2dda196ae..4699bd854 100644
--- a/hetu-docs/zh/index.md
+++ b/hetu-docs/zh/index.md
@@ -120,7 +120,6 @@ headless: true
 - [SQL语言]("#")
     - [数据类型]({{< relref "./docs/language/types.md" >}})
     - [预留关键字]({{< relref "./docs/language/reserved.md" >}})
-    - [旧时间戳和新时间戳]({{< relref "./docs/language/timestamp.md" >}})
 
 - [SQL语法介绍]({{< relref "./docs/sql/_index.md" >}})
     - [ALTER SCHEMA]({{< relref "./docs/sql/alter-schema.md" >}})