The three Enforcement Act of experiment education published in the 2014 year, by contrast the quality assurance of higher education was entitled to earlier and more comprehensive development.Judging from the quality assurance, internal evaluation mechanism standard can maintain autonomy and diversity, external mechanisms above ideas to assist the internal mechanism to assess performance of self-integrity and legitimacy can be avoided by rating agencies feel good about themselves, make more precise educational purpose practice. It can be said that both internal and external quality assurance mechanism of micro-and macro-vision, keep the education system to meet simultaneously to the interests of individuals and communities, Knowledge and skills, Social cohesion and democratic progress .Effective functioning and timely correction is the necessary and sufficient conditions of quality assurance, is a well-organized pattern of education in schools, deal with experimental education implementation of quality assurance mechanism, grasp the direction and strategy of legitimacy, play an effective sensitivity between form and function, we can fully respond to the performance of education accountability.