本文以二语习得研究理论为基础,回顾国外聋人二语习得的研究。对相关文献进行分析后发现,国外聋人二语习得研究在学习者外部因素方面论述了:聋人作为语言少数民族的特点,聋人二语输入侧重于书面语,聋教师与医疗专家、家长合作,共同促进聋人的语言发展;在内部因素方面,分析了聋人二语习得中的普遍语法、迁移以及学习的动机、策略;在学习者语言方面,把聋人写作中的词汇、语篇及阅读流利度与健听人比较,发现不同之处及问题。国外的研究可为我国在聋人二语习得领域的探索提供参考借鉴:需要多探讨、综合多方力量来完善聋人的二语输入,了解普遍语法的作用,保持聋人二语学习动机,改进学习策略,提高聋人的抽象思维能力和阅读流利度。 Based on the theory of second language acquisition, this article reviews the researches on foreign language deaf second language acquisition. After analyzing the related literatures, we find that the study of foreign language deaf second language acquisition has discussed the external factors of learners: Deaf people as a language minorities, deaf second language input focuses on written language, deaf teachers and medical experts, parents In the aspect of internal factors, this paper analyzes the universal grammar, transfer and learning motivation and tactics of deaf second language acquisition. In the aspect of learner language, the vocabulary of deaf people writing, Discourse and reading fluency and hearing comparison, found differences and problems. Foreign research can provide reference for our country to explore in the field of second language acquisition for deaf learners. It is necessary to explore and synthesize various forces to improve the second language input of deaf people, to understand the role of universal grammar, to maintain the motivation of second language learning for the deaf, Improve learning strategies and improve the abilities of abstract thinking and reading fluency of deaf people.