This paper provides a detailed overview of the origin and development of Proximization Theory, as well as the related literature review both abroad and in China. The author also discusses its limitations and the trend for development, in the hope of providing useful reference for further research and development of PT on the one hand, and looking forward to further innovation and breakthrough in the theoretical framework of critical cognitive linguistics on the other. Thus discourse analysis can provide people with better criteria for judgement and help people better reshape their positive cognition of the world through language resources and enjoy the beauty of diversity and harmony.