1, Public Security Police College: refers to the colleges directly under the Ministry of Public Security and provincial public security organs that train people's police for public security organs. They are divided into two categories according to the affiliation: directly under the central ministries and commissions and directly under local provinces, and divided into undergraduate colleges and junior colleges (higher vocational colleges) according to the school-running level;

2. Public security colleges only refer to public security police colleges, and judicial police colleges do not belong to the sequence of public security colleges;

3. Key public security colleges include: Chinese People's Public Security University, Chinese People's Public Security University, Chinese Criminal Police College, Central Judicial Police College, Chinese People's Armed Police Force College, colleges directly under the Ministry of Public Security, Chinese People's Public Security University, Chinese Criminal Police College, railway police college, Chinese People's Armed Police Force College, Public Security Marine Police College, Central Judicial Police College, Nanjing Forest Police College, Yunnan Police College, sichuan police college, Hubei Police College, Guangdong Police College and Shandong Police College.