Language variation, a kind of language form diverging from the language norm, is a common speech phenomenon and the focus of sociolinguistic studies. It is closely linked with society and social psychology. Not only is it controlled by complex social factors, but also influenced by various kinds of social psychology: the psychology of seeking curiosity and change, the psychology of avoiding vulgar language and seeking elegant language, the psychology of sexual differences between male and female, the psychology of worship, the psychology of adaptation and so on. People have complex social psychology and language is subject to variation. It is possible to further understand the way and the regulation of language variation only by linking society and social psychology to study language variation. Language variation, a kind of language form diverging from the language norm, is a common speech phenomenon and the focus of sociolinguistic studies. It is closely linked with society and social psychology. Not only is it controlled by complex social factors, but also influenced by various kinds of social psychology: the psychology of seeking vuliosity and change, the psychology ofaging vulgar language and seeking elegant language, the psychology of sexual differences between male and female, the psychology of worship, the psychology of adaptation and so on. complex social psychology and language is subject to variation. It is possible to further understand the way and the regulation of language variation only by linking society and social psychology to study language variation.