At present, the universities not only perform the traditional modern state's function to provide its citizens with the necessary education, but they also have taken on new roles such as assuring the quality of education and research while introducing new educational programs, all of which are based on an international university-level exchange. This article focuses on the strategic growth of ”internationalization” with regard to Japanese universities, and particular attention is paid to the policies focused on international student mobility, inbound-flows such as the 300,000 International Students Plan. The article examines the policies on the admission of international students and some significant prospects of internationalization of universities in Japan, including systematic strategies for university internationalization, introducing Englishtaught programs, Japanese language education, dispatch of Japanese students, and introducing ”gap year” system. Through these policies, the government has come to play a central role in offering subsidies for the construction of student accommodations, financial aid for government scholarship programs, support for host institutions of international students, funds for tuition reductions and exemptions, and relaxed immigration regulations.