In 2015, reuse of disposable needles at a few local clinics caused herd infections of hepatitis. This triggered a review of the current medical license control system and resulted in the revision of the Medical Law to increase regulation of medical doctors. This article explores the basis and direction of self-regulation of medical profession in terms the revision cases of the Medical Law and new ways to restructure the legal system with regard to medicine. It is expected a self-regulation scheme can be developed based on medical professionalism and new medical laws of Korea.