中文摘要：

藏语句子边界识别是一项重要的基础性工作,它的准确率直接影响藏语句法分析、汉藏（或藏汉）平行语料库和藏汉（或汉藏）机器翻译等的研究工作。文章通过分析藏文文法知识,提出了一种比较简单而实用的词性规则法,其主要思想是：单垂符或双垂符的前后词性来判断句子是否结束。经测试,文章提出的藏语句子边界识别方法在文学类、诗歌类、医学类和新闻类等536句藏语语料中句子边界的识别准确率达到96.37%。

英文摘要：

Boundary identification of Tibetan sentence is an important basic work and its rate of accuracy directly influences on the Tibetan sentence analysis and Chinese-Tibetan（or Tibetan-Chinese） parallel corpus and Chinese-Tibetan（or Tibetan-Chinese） machine translation.This paper proposes a relatively simple and practical POS rules by means of Tibetan grammar.The main idea is that the front and rear parts of speech of the single vertical symbol or dual vertical symbol can determine whether or not the sentence ended.We found that the accuracy rate of boundary identification of Tibetan sentences reaching to 96.37% in Tibetan corpus including 536 sentences of literature,poetry,medical and News.