本文从语言学的角度论述了方言的三大分支的定义 ,地域性方言的发展概况 ,社会性方言在文学中的作用等问题 ,从而阐明了“风格即人” ,也就是说我们能通过对人的语言的研究来评判一个人 ,每个人的语言风格能反映出他是一种什么样的人 This paper discusses the definition of the three major branches of dialects, the development of regional dialects and the role of social dialects in literature from the perspective of linguistics, thus clarifying the “style is man”, that is to say, Person’s language research to judge a person, each person’s language style can reflect what kind of person he is