diff --git a/Message/Json.cpp b/Message/Json.cpp
index 39771478..8b34b849 100644
--- a/Message/Json.cpp
+++ b/Message/Json.cpp
@@ -56,13 +56,13 @@ JsonType Json::Type() const
 }
 
 // 获取值
-cstring	Json::AsString()	const
+String	Json::AsString()	const
 {
 	if(!_str && !_len) return nullptr;
 
 	if(_str[0] != '"') return nullptr;
 
-	return _str;
+	return String(_str, _len);
 }
 
 bool	Json::AsBoolean()	const
diff --git a/Message/Json.h b/Message/Json.h
index 7611cd67..2ed7a9dc 100644
--- a/Message/Json.h
+++ b/Message/Json.h
@@ -35,7 +35,7 @@ public:
 	JsonType Type() const;
 
 	// 获取值
-	cstring	AsString()	const;
+	String	AsString()	const;
 	bool	AsBoolean()	const;
 	int		AsInt()		const;
 	float	AsFloat()	const;