diff --git a/go.sum b/go.sum
index b3f692e..fc26243 100644
--- a/go.sum
+++ b/go.sum
@@ -4,3 +4,4 @@ github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/emirpasic/gods v1.12.0 h1:QAUIPSaCu4G+POclxeqb3F+WPpdKqFGlw36+yOzGlrg=
 github.com/emirpasic/gods v1.12.0/go.mod h1:YfzfFFoVP/catgzJb4IKIqXjX78Ha8FMSDh3ymbK86o=
+github.com/petar/GoLLRB v0.0.0-20190514000832-33fb24c13b99 h1:KcEvVBAvyHkUdFAygKAzwB6LAcZ6LS32WHmRD2VyXMI=
diff --git a/tree/tried/tried.go b/tree/tried/tried.go
index b4678f2..77f5a6c 100644
--- a/tree/tried/tried.go
+++ b/tree/tried/tried.go
@@ -1,9 +1,30 @@
 package tried
 
+type TriedString string
+
+func (ts TriedString) Size() uint {
+	return uint(len(ts))
+}
+
+func (ts TriedString) WordIndex(idx uint) uint {
+	w := ts[idx]
+	if w >= 'a' && w <= 'z' {
+		return uint(w) - 'a'
+	} else if w >= 'A' && w <= 'Z' {
+		return uint(w) - 'A' + 26
+	} else {
+		return uint(w) - '0' + 52
+	}
+}
+
+type ObjectIndex interface {
+	WordIndex(idx uint) uint
+	Size() uint
+}
+
 type Tried struct {
 	root     *Node
 	datasize uint
-	// wordIndex func ()
 }
 
 type Node struct {
@@ -14,17 +35,28 @@ type Node struct {
 func New() *Tried {
 	tried := &Tried{}
 	tried.root = new(Node)
+	tried.datasize = 62
 	return tried
 }
 
-func (tried *Tried) Put(words string, values ...interface{}) {
+func (tried *Tried) wordIndex(w byte) uint {
+	if w >= 'a' && w <= 'z' {
+		return uint(w) - 'a'
+	} else if w >= 'A' && w <= 'Z' {
+		return uint(w) - 'A' + 26
+	} else {
+		return uint(w) - '0' + 52
+	}
+}
+
+func (tried *Tried) Put(words ObjectIndex, values ...interface{}) {
 	cur := tried.root
 	var n *Node
-	for i := 0; i < len(words); i++ {
-		w := uint(words[i] - 'a')
+	for i := uint(0); i < words.Size(); i++ {
+		w := words.WordIndex(i)
 
 		if cur.data == nil {
-			cur.data = make([]*Node, 26)
+			cur.data = make([]*Node, tried.datasize)
 		}
 
 		if n = cur.data[w]; n == nil {
@@ -48,11 +80,11 @@ func (tried *Tried) Put(words string, values ...interface{}) {
 
 }
 
-func (tried *Tried) Get(words string) interface{} {
+func (tried *Tried) Get(words ObjectIndex) interface{} {
 	cur := tried.root
 	var n *Node
-	for i := 0; i < len(words); i++ {
-		w := uint(words[i] - 'a') //TODO: 升级Index 函数
+	for i := uint(0); i < words.Size(); i++ {
+		w := words.WordIndex(i) //TODO: 升级Index 函数
 		if n = cur.data[w]; n == nil {
 			return nil
 		}
@@ -61,7 +93,7 @@ func (tried *Tried) Get(words string) interface{} {
 	return n.value
 }
 
-func (tried *Tried) Has(words string) bool {
+func (tried *Tried) Has(words ObjectIndex) bool {
 	return tried.Get(words) != nil
 }
 
diff --git a/tree/tried/tried_test.go b/tree/tried/tried_test.go
index fbc6d1d..9ff23c3 100644
--- a/tree/tried/tried_test.go
+++ b/tree/tried/tried_test.go
@@ -2,37 +2,40 @@ package tried
 
 import (
 	"testing"
+
+	"github.com/Pallinder/go-randomdata"
 )
 
 func TestTried_PutAndGet1(t *testing.T) {
 	tried := New()
-	tried.Put("asdf")
-	tried.Put("hehe", "hehe")
-	tried.Put("xixi", 3)
+
+	tried.Put(TriedString("asdf"))
+	tried.Put(TriedString("hehe"), "hehe")
+	tried.Put(TriedString("xixi"), 3)
 
 	var result interface{}
 
-	result = tried.Get("asdf")
+	result = tried.Get(TriedString("asdf"))
 	if result != tried {
 		t.Error("result should be 3")
 	}
 
-	result = tried.Get("xixi")
+	result = tried.Get(TriedString("xixi"))
 	if result != 3 {
 		t.Error("result should be 3")
 	}
 
-	result = tried.Get("hehe")
+	result = tried.Get(TriedString("hehe"))
 	if result != "hehe" {
 		t.Error("result should be hehe")
 	}
 
-	result = tried.Get("haha")
+	result = tried.Get(TriedString("haha"))
 	if result != nil {
 		t.Error("result should be nil")
 	}
 
-	result = tried.Get("b")
+	result = tried.Get(TriedString("b"))
 	if result != nil {
 		t.Error("result should be nil")
 	}
@@ -40,10 +43,10 @@ func TestTried_PutAndGet1(t *testing.T) {
 
 func TestTried_Traversal(t *testing.T) {
 	tried := New()
-	tried.Put("asdf")
-	tried.Put("abdf", "ab")
-	tried.Put("hehe", "hehe")
-	tried.Put("xixi", 3)
+	tried.Put(TriedString("asdf"))
+	tried.Put(TriedString("abdf"), "ab")
+	tried.Put(TriedString("hehe"), "hehe")
+	tried.Put(TriedString("xixi"), 3)
 
 	var result []interface{}
 	tried.Traversal(func(idx uint, v interface{}) bool {
@@ -67,5 +70,49 @@ func TestTried_Traversal(t *testing.T) {
 	if result[3] != 3 {
 		t.Error(result[3])
 	}
-
+}
+
+func BenchmarkTried_Put(b *testing.B) {
+
+	var data []TriedString
+	b.N = 10000
+	count := 1000
+
+	for i := 0; i < b.N; i++ {
+		data = append(data, TriedString(randomdata.RandStringRunes(10)+randomdata.RandStringRunes(4)))
+	}
+
+	b.ResetTimer()
+	b.N = b.N * count
+	for c := 0; c < count; c++ {
+		tried := New()
+		for _, v := range data {
+			tried.Put(v)
+		}
+	}
+}
+
+func BenchmarkTried_Get(b *testing.B) {
+
+	var data []TriedString
+	b.N = 10000
+	count := 1000
+
+	for i := 0; i < b.N; i++ {
+		data = append(data, TriedString(randomdata.RandStringRunes(10)+randomdata.RandStringRunes(4)))
+	}
+
+	b.N = b.N * count
+
+	tried := New()
+	for _, v := range data {
+		tried.Put(v)
+	}
+
+	b.ResetTimer()
+	for c := 0; c < count; c++ {
+		for _, v := range data {
+			tried.Get(v)
+		}
+	}
 }