双语学习者由于母语使用的时间减少或者停用,会产生母语退化的现象,而这个现象在中国,主要发生在中国英语学习者身上。本文主要针对国内外对母语磨蚀的研究进行了回顾、分析与评价,为中国英语学习者母语词汇磨蚀的研究提出了展望,并阐明了对解决中国英语学习者亟待面对的“母语磨蚀”问题的重要意义。 Bilingual learners suffer from the degradation of their mother tongue due to the reduction or discontinuation of their time spent with their mother tongue, a phenomenon that occurs mainly in Chinese EFL learners in China. This paper mainly reviews the researches on mother tongue erosion at home and abroad, and puts forward the prospect for the study of the mother tongue vocabulary erosion in China. At the same time, it expounds that the study of mother tongue erosion in Chinese English learners urgently needs to be addressed, The significance of the problem.