diff --git a/tree/consts.go b/tree/consts.go
index 1e03547..5d66254 100644
--- a/tree/consts.go
+++ b/tree/consts.go
@@ -23,3 +23,16 @@ const (
 	// KeywordEscapeSymbol 转义符号
 	KeywordEscapeSymbol = `\`
 )
+
+const (
+	// ValueTypeString 字符串类型
+	ValueTypeString = "string"
+	// ValueTypeInteger int类型
+	ValueTypeInteger = "int64"
+	// ValueTypeFloat float类型
+	ValueTypeFloat = "float64"
+	// ValueTypeMap map数据
+	ValueTypeMap = "map"
+	// ValueTypeArray 数组
+	ValueTypeArray = "array"
+)