diff --git a/docs/uts/buildin-object-api/string.md b/docs/uts/buildin-object-api/string.md
index 0bfaea81f18b0a406f436f7cb1afa051cbe2c956..a73c5966892b50d5fb5b848834b2d19c37d691bf 100644
--- a/docs/uts/buildin-object-api/string.md
+++ b/docs/uts/buildin-object-api/string.md
@@ -516,6 +516,26 @@ console.log(str2.padEnd(5));
 
 <!-- UTSJSON.String.startsWith.compatibility -->
 
+### isWellFormed()
+
+<!-- UTSJSON.String.isWellFormed.description -->
+
+<!-- UTSJSON.String.isWellFormed.param -->
+
+<!-- UTSJSON.String.isWellFormed.returnValue -->
+
+<!-- UTSJSON.String.isWellFormed.compatibility -->
+
+### toWellFormed()
+
+<!-- UTSJSON.String.toWellFormed.description -->
+
+<!-- UTSJSON.String.toWellFormed.param -->
+
+<!-- UTSJSON.String.toWellFormed.returnValue -->
+
+<!-- UTSJSON.String.toWellFormed.compatibility -->
+
 ### at(index)
 
 <!-- UTSJSON.String.at.description -->
@@ -527,3 +547,5 @@ console.log(str2.padEnd(5));
 <!-- UTSJSON.String.at.compatibility -->
 
 <!-- UTSJSON.String.tutorial -->
+
+