Since the 1980s，with China’s accession to various international conventions related to the protection of minors and the gradual improvement of China’s laws on the protection of minors and the prevention of crime，scholars’ research of the protection and crime of minors in China gradually becomes thorough，and the research domain also unceasingly expands. This report summarizes scholars’ research on the rights and welfare of the child，the juvenile delinquency，the juvenile justice system，juvenile correction，juvenile legal education，school bullying，Convention on the rights of the child，Beijing Rules，the Riyadh rules among others during the period from 1980 to 2020. Also，it summarizes the key points and academic controversies of the research on the protection and crime of minors in the past 40 years. The nature research，the problem research，the reason research and the countermeasure research involved in each field are analyzed and sorted out in the essay. On the whole，Chinese scholars have gone through a process from shallow to deep and layer by layer in the research of juvenile protection and crime. However，most scholars analyze and prove it from the angle of theoretical research，and there are few literatures about empirical research. In addition，the study of juvenile correctional facilities and the study of the international conventions related to the protection of minors in the subsector still have the problem of a small amount of research literature.