diff --git a/jieba_test.go b/jieba_test.go
index a8013b7..7163224 100644
--- a/jieba_test.go
+++ b/jieba_test.go
@@ -745,3 +745,45 @@ func TestSetdictionary(t *testing.T) {
 		}
 	}
 }
+
+func TestLoadUserDict(t *testing.T) {
+	SetDictionary("dict.txt")
+	LoadUserDict("userdict.txt")
+
+	sentence := "李小福是创新办主任也是云计算方面的专家;例如我输入一个带“韩玉赏鉴”的标题，在自定义词库中也增加了此词为N类型"
+	result := []string{"\u674e\u5c0f\u798f", "\u662f", "\u521b\u65b0\u529e", "\u4e3b\u4efb", "\u4e5f", "\u662f", "\u4e91\u8ba1\u7b97", "\u65b9\u9762", "\u7684", "\u4e13\u5bb6", ";", "\u4f8b\u5982", "\u6211", "\u8f93\u5165", "\u4e00\u4e2a", "\u5e26", "\u201c", "\u97e9\u7389\u8d4f\u9274", "\u201d", "\u7684", "\u6807\u9898", "\uff0c", "\u5728", "\u81ea\u5b9a\u4e49\u8bcd", "\u5e93\u4e2d", "\u4e5f", "\u589e\u52a0", "\u4e86", "\u6b64", "\u8bcd\u4e3a", "N", "\u7c7b\u578b"}
+	words := Cut(sentence, false, true)
+	if len(words) != len(result) {
+		t.Error(len(words))
+	}
+	for index, word := range words {
+		if word != result[index] {
+			t.Error(word)
+		}
+	}
+
+	sentence = "easy_install is great"
+	result = []string{"easy_install", " ", "is", " ", "great"}
+	words = Cut(sentence, false, true)
+	if len(words) != len(result) {
+		t.Error(len(words))
+	}
+	for index, word := range words {
+		if word != result[index] {
+			t.Error(word)
+		}
+	}
+
+	sentence = "python 的正则表达式是好用的"
+	result = []string{"python", " ", "\u7684", "\u6b63\u5219\u8868\u8fbe\u5f0f", "\u662f", "\u597d\u7528", "\u7684"}
+	words = Cut(sentence, false, true)
+	if len(words) != len(result) {
+		t.Error(words)
+		t.Error(result)
+	}
+	for index, word := range words {
+		if word != result[index] {
+			t.Error(word)
+		}
+	}
+}
diff --git a/trie_node.go b/trie_node.go
index 8a2b197..b3bf182 100644
--- a/trie_node.go
+++ b/trie_node.go
@@ -2,24 +2,14 @@ package jiebago
 
 import (
 	"bufio"
-	"crypto/sha1"
-	"encoding/gob"
-	"fmt"
 	"math"
 	"os"
 	"path/filepath"
-	"runtime"
 	"strconv"
 	"strings"
 	"unicode/utf8"
 )
 
-const (
-	CACHE_NAME        = "jieba.gob"
-	USER_CACHE_PREFIX = "jieba.user."
-	USER_CACHE_SUFFIX = ".gob"
-)
-
 type Node struct {
 	Name     string
 	SubNodes Trie
@@ -35,16 +25,6 @@ type TopTrie struct {
 	Freq    map[string]float64
 }
 
-func hash(s string) string {
-	h := sha1.New()
-	h.Write([]byte(s))
-	return fmt.Sprintf("%x", h.Sum(nil))
-}
-
-func getUserCacheName(prefix string, path string, suffix string) string {
-	return fmt.Sprintf("%s%s%s", prefix, hash(path), suffix)
-}
-
 func newTopTrie(filename string) (*TopTrie, error) {
 	var file_path string
 	var topTrie *TopTrie
@@ -58,32 +38,6 @@ func newTopTrie(filename string) (*TopTrie, error) {
 		file_path = filepath.Clean(filepath.Join(pwd, filename))
 	}
 
-	_, curFileName, _, _ := runtime.Caller(1)
-	_curpath := filepath.Dir(curFileName)
-	abs_path := filepath.Join(_curpath, Dictionary)
-	var cache_file string
-	if file_path == abs_path {
-		cache_file = filepath.Join(os.TempDir(), CACHE_NAME)
-	} else {
-		cache_file = filepath.Join(os.TempDir(),
-			getUserCacheName(USER_CACHE_PREFIX, abs_path, USER_CACHE_SUFFIX))
-	}
-
-	cacheFileStat, cacheErr := os.Stat(cache_file)
-	dictFileStat, _ := os.Stat(abs_path)
-	if cacheErr == nil {
-		if cacheFileStat.ModTime().After(dictFileStat.ModTime()) {
-			cacheFile, openError := os.Open(cache_file)
-			if openError == nil {
-				dec := gob.NewDecoder(cacheFile)
-				err := dec.Decode(&topTrie)
-				if err == nil {
-					return topTrie, nil
-				}
-			}
-		}
-	}
-
 	topTrie = &TopTrie{T: make(Trie), MinFreq: 100.0, Total: 0.0, Freq: make(map[string]float64)}
 	file, openError := os.Open(file_path)
 	if openError != nil {
@@ -112,11 +66,6 @@ func newTopTrie(filename string) (*TopTrie, error) {
 		topTrie.Freq[key] = val
 	}
 
-	cacheFile_, _ := os.OpenFile(cache_file, os.O_CREATE|os.O_WRONLY, 0644)
-	defer cacheFile_.Close()
-	enc := gob.NewEncoder(cacheFile_)
-	enc.Encode(topTrie)
-
 	return topTrie, nil
 }
 
@@ -167,6 +116,7 @@ func LoadUserDict(file_path string) error {
 		}
 		words := strings.Split(line, " ")
 		word, freqStr := words[0], words[1]
+		word = strings.Replace(word, "\ufeff", "", 1)
 		freq, _ := strconv.ParseFloat(freqStr, 64)
 		TT.addWord(word, freq)
 	}