1, China's labor law stipulates that 18 years old can only work, otherwise it is child labor.

2. Because security guards need to stand and walk for a long time, they have high requirements for physical fitness, so they are required to be healthy.

Because the salary of security guards is not high, college students are unwilling to do it. Because job responsibilities need to communicate with visitors, they need a certain culture, so they all require high school education.