随着现代社会不同地区人群交往日渐频繁，新的方言变体——都市方言逐渐形成。这一方言变体指的是离开家乡外出工作而又仍继续使用家乡方言的大都市人群所使用的方言。随着社会语言学与方言研究相交融，这一群体所使用的方言变异情况及变异原因得到研究者的关注。本文从在粤客家人群体出发，以语言变异理论和词汇接触扩散理论为基础，对在粤客家人群体的语音、词汇变异情况进行研究。

With the increasing frequent exchanges of people in different regions of modern society, new dialect variants -urban dialects have gradually formed. This dialect is transformed refers to the dialects used by the metropolis people who leave their hometown and continue to use their hometown dialects. With the integration of social linguistics and dialects, the dialect mutations used by this group and the reasons for the mutation have attracted the attention of the researchers. This article starts from the population of the Hakkas in Guangdong, based on the theory of language mutation theory and vocabulary contact diffusion theory, and studies the voice and vocabulary variations of this group.