1 public security science 2 public security science (police law major) 3 domestic public security 4 public security management science 5 public security information science 6 criminology 7 foreign-related police science 8 police command and tactics 9 criminal science and technology 10 public security auditing technology (video image investigation technology direction) 1 traffic management engineering 12 Brief introduction of network security and law enforcement college. People's Public Security University of China (hereinafter referred to as "Polytechnic University") is located in Beijing, China. It is an ordinary institution of higher learning directly under the Ministry of Public Security and a senior police officer college of the Ministry of Public Security. Later, it merged with the former China People's Police Officers University to form a new Chinese People's Public Security University. The school is the first batch of "double first-class" world-class discipline construction universities and the first batch of "excellent legal talents education and training plan" pilot universities in China.