The problem of substitute teachers has not been solved naturally with the development of society and education, but it has become more and more intense. The emergence of a large scale city substitute teachers with the acceleration of urbanization, the current 'two child policy' exacerbates the shortage of temporary substitute teachers; the rights and interests of substitute teachers is the crux of the current management; it is urgent to improve the teacher management system and to protect the interests of substitute teachers ; In order to solve the problem from the source, it is necessary to further promote the reform of teachers, improve teacher education system.