diff --git a/README.md b/README.md
index c29fedd..21aae21 100644
--- a/README.md
+++ b/README.md
@@ -1,22 +1,21 @@
-pinyin.py
-=========
-
-汉字转拼音,With Python
-
-
-Example:
-
-    from pinyin import PinYin
-    
-    test = PinYin()
-    test.load_word()
-    test.hanzi2pinyin(string='钓鱼岛是中国的')
-
-
-Out:
-
-    test.hanzi2pinyin(string='钓鱼岛是中国的')
-    ['diao', 'yu', 'dao', 'shi', 'zhong', 'guo', 'de']    
-    test.hanzi2pinyin_split(string='钓鱼岛是中国的', split="-")
-    diao-yu-dao-shi-zhong-guo-de
-
+pinyin.py
+=========
+
+汉字转拼音,With Python
+
+
+Example:
+
+    from pinyin import PinYin
+    
+    test = PinYin()    
+    test.hanzi2pinyin(string='钓鱼岛是中国的')
+
+
+Out:
+
+    test.hanzi2pinyin(string='钓鱼岛是中国的')
+    ['diao', 'yu', 'dao', 'shi', 'zhong', 'guo', 'de']    
+    test.hanzi2pinyin_split(string='钓鱼岛是中国的', split="-")
+    diao-yu-dao-shi-zhong-guo-de
+
diff --git a/pinyin.py b/pinyin.py
index 938b727..c6c0b3b 100644
--- a/pinyin.py
+++ b/pinyin.py
@@ -13,16 +13,19 @@
 
 
 class PinYin(object):
-    def __init__(self, dict_file='word.data'):
+    def __init__(self):
         self.word_dict = {}
-        self.dict_file = dict_file
-
-
-    def load_word(self):
-        if not os.path.exists(self.dict_file):
+        dirname, filename = os.path.split(__file__)        
+        dict_file = os.path.join(dirname, 'word.data')
+        self.load_word(dict_file)
+        
+    def load_word(self, dict_file):        
+        if not os.path.exists(dict_file):
             raise IOError("NotFoundFile")
-
-        with file(self.dict_file) as f_obj:
+        if len(self.word_dict.keys()) > 0:
+            print 'Dictionary already loaded'
+            return
+        with file(dict_file) as f_obj:
             for f_line in f_obj.readlines():
                 try:
                     line = f_line.split('    ')
@@ -30,7 +33,7 @@ def load_word(self):
                 except:
                     line = f_line.split('   ')
                     self.word_dict[line[0]] = line[1]
-
+        f_obj.close()
 
     def hanzi2pinyin(self, string=""):
         result = []
@@ -54,7 +57,6 @@ def hanzi2pinyin_split(self, string="", split=""):
 
 if __name__ == "__main__":
     test = PinYin()
-    test.load_word()
     string = "钓鱼岛是中国的"
     print "in: %s" % string
     print "out: %s" % str(test.hanzi2pinyin(string=string))