According to the regulations of education bureau of shanghai, reserve teachers need to work as reserve teachers for more than two years. Reserve teachers need to work continuously for more than two semesters. Reserve teachers need to be employed as a class of teachers, that is, primary school, junior high school or senior high school teachers. After the reserve teachers meet the above conditions, they can apply to education bureau of shanghai for becoming regular teachers. The specific formalization procedures and requirements will vary according to local policies and regulations. Therefore, it is suggested that reserve teachers should read the relevant policy documents carefully before applying for employment, and consult the human resources department of their school or education bureau for accurate information and guidance.