There are several ways to recruit police in Korea. The first is to recruit patrol cadets through examinations, and after training in the Central Police Academy for half a year, they are appointed as the lowest-level police and patrol officers. The second is to recruit cadres who apply for the exam through the examination, and after one year of training in the comprehensive police academy, they are appointed as the lowest-level police cadres and guards. And passed the exam to enter the police university, studied for 4 years, and worked as a guard after graduation. The training contents of central police academy, comprehensive police academy and police university mainly include law, administration, police science and physical training. The Central Police School has more specialized courses than the comprehensive police schools and police investigation universities that train police cadres. In addition, the central police school has courses for training arrest, and the police university has foreign language teaching. Patrol age 18 years old, under 30 years old, with high school education or above. Height requirement 167cm or more (female 157cm or more), weight over 57kg (female over 47kg), and vision over 0.8. Those who pass the medical examination need to have a driver's license. The examination includes written examination, job adaptability evaluation and interview. The age of the examination for recruiting cadres is 2 1 year old and under 30 years old. Except for the type of examination subjects, the examination method is the same as that of the police. South Korea's police ranks are divided into: chief sheriff, chief sheriff, chief police officer, chief police officer, chief police officer, chief police officer, chief police officer, chief police officer and security officer. These are cadres, followed by police supervisors, police chiefs and patrolmen. They are engaged in public security and other businesses.