在社会语言学语言变异理论的指导下,综合运用问卷法、观察法、访问法、抽样法等多种调查方法,实地调查了黑龙江省牡丹江市市区居民的平翘舌字的发音状况,根据调查年龄层次划分牡丹江市区新派、老派人群在平翘舌读音上的不同揭示牡丹江地区平翘舌语音发展演变的趋势。 Under the guidance of linguistic and linguistic variation theory of social linguistics, this paper investigates the pronunciation status of Pingqiao tongue in urban areas in Mudanjiang city of Heilongjiang province by comprehensively using various survey methods such as questionnaire, observation, interview and sampling. According to The investigation of the age-stratified division of the Mudanjiang urban new school, the old-school crowd Ping Ping tongue reading difference reveals the Mudanjiang Ping Tailiao voice development and evolution trend.