Abstract:At present, academics have made extensive study of the college quality assurance of European and American countries represented by the U.S. and the U. K., but seldom touched upon Japan’s changes in recent years. Since 1990s, due to various national and international factors, learning from Europe and America and taking into account of its own university tradition, Japan has gradually established a multi-level,multi-dimension and multilateral college quality assurance system with different measurements which include self-assessment, external assessment and the third party assessment. This paper argues that different from western countries like the U.S and the U.K. the influence and control of the central government has always existed although Japan’s current college quality assurance system grew in the context of marketization and internalization. The study also suggests the new quality assurance system has actually increased the transparency of school management in Japan’s universities and also improved their performance, especially prompted fundamental changes in national universities. However, it remains largely unknown that current quality assurance system to what extent can have the desired effects and results.