In the back. According to the inquiry of official website of Gansu Education Examinations Institute, the admission of public security colleges (majors) is arranged in batches of colleges in advance, and the order is undergraduate first and then junior college. Public security majors are admitted to ordinary higher vocational colleges (junior colleges) before undergraduate approval. Candidates who apply for the public security major are admitted in turn according to the rules of "giving priority to scores and following volunteers" on the basis of passing the interview, physical examination, physical fitness assessment and political examination, and the admission rate of female students does not exceed 15%.