diff --git a/docs/zh-CN/docs/sql-manual/sql-functions/date-time-functions/from-unixtime.md b/docs/zh-CN/docs/sql-manual/sql-functions/date-time-functions/from-unixtime.md
index 42aeb89037..2d55bed2ad 100644
--- a/docs/zh-CN/docs/sql-manual/sql-functions/date-time-functions/from-unixtime.md
+++ b/docs/zh-CN/docs/sql-manual/sql-functions/date-time-functions/from-unixtime.md
@@ -39,9 +39,6 @@ under the License.
 
 其余 `string_format` 格式是非法的，返回NULL
 
-如果给定的时间戳小于 0 或大于 2147483647，则返回 NULL。即时间戳范围是：
-
-1970-01-01 00:00:00 ~ 2038-01-19 03:14:07
 
 ### example