外来语是构成现代日语的三大部分之一,它的形成和发展有很多原因,本文在回溯历史的基础上,从日语本身的特点、日本民族的社会意识、语言表达的需要以及教育的普及等四方面考察其原因。 Loanwords constitute one of the three major parts of modern Japanese. There are many reasons for the formation and development of Loanwords. Based on the retrospective history, this paper analyzes the characteristics of Japanese itself, the social consciousness of Japanese people, the need of language expression and the popularization of education Investigate its causes in four aspects.