diff --git a/jieba/posseg/__init__.py b/jieba/posseg/__init__.py
index affeac1..982c132 100644
--- a/jieba/posseg/__init__.py
+++ b/jieba/posseg/__init__.py
@@ -65,7 +65,7 @@ def __cut(sentence):
 		yield pair(sentence[next:], pos_list[next][1] )
 
 def __cut_detail(sentence):
-	re_han, re_skip = re.compile(ur"([\u4E00-\u9FA5]+)"), re.compile(ur"([a-zA-Z0-9]+)")
+	re_han, re_skip = re.compile(ur"([\u4E00-\u9FA5]+)"), re.compile(ur"([\.0-9]+|[a-zA-Z0-9]+)")
 	re_eng,re_num = re.compile(ur"[a-zA-Z+#]+"), re.compile(ur"[0-9]+")
 	blocks = re_han.split(sentence)
 	for blk in blocks: