This paper points out the problem of the plural external evaluation system for Japanese universities. Japanese evaluation system is internationally the peculiar case that both of chartering in government and accreditation in government and non-government agencies exist in parallel. It is the biggest problem that the accreditation agencies secure both the autonomy and quality control and the appropriate cooperation with chartering goes well. This paper also reviews, as the experience in the world and Japan, the activity in the INQAAHE and the JUAA 2003 Version, which aims at the quality assurance of internationally viable higher education and foresees the new accreditation system recognized by government after 2004. From these experiences, it is prospected to develop the plural external evaluation system in future.