diff --git a/docs/uts/buildin-object-api/regexp.md b/docs/uts/buildin-object-api/regexp.md
index 12e1dfe4b4985af82b628dc6a5080aeb2f1c226c..8cdf6d857eb49b0a7f57ab98a3b4de27c271a75f 100644
--- a/docs/uts/buildin-object-api/regexp.md
+++ b/docs/uts/buildin-object-api/regexp.md
@@ -14,7 +14,7 @@ RegExp 对象用于将文本与一个模式匹配。
 
 <!-- UTSJSON.RegExp.Constructor.tutorial -->
 
-### Constructor(pattern, flags?)_1
+### Constructor(pattern, flags?)
 
 <!-- UTSJSON.RegExp.Constructor_1.description -->