本文在Norton的“二语投资”概念框架下,以口述史和访谈为研究方法,对三个中国朝鲜族家庭的语言学习进行了个案研究,描述了中国朝鲜族父母在子女的语言学习过程中呈现的矛盾与变化。通过个案研究,本文认为研究对象对子女语言学习的投资就是为子女建构社会认同的过程,反映了语言学习与社会认同的关系。 Under the framework of Norton ’s “Second Language Investment ”, this thesis uses oral history and interview as a research method to conduct a case study on the language learning of three Chinese Korean families, and describes the language learning of Chinese Korean parents in their children Contradictions and changes in the process. Through case studies, this paper argues that the research object’s investment in children’s language learning is the process of constructing social identity for children, which reflects the relationship between language learning and social identity.