保安广泛存在于社会生活的各个方面，其在环境和人们的生活方式上已经形成 了不可磨灭的印记。保安在生产过程中提供安全保障，潜移默化地对人的行为进行有效的控制，自我国保安业于1984年12月起步以来，已经度过了30年，我国的保安业在不断发展壮大 ，从业人数已达 420 万人，其市场产值已达数百亿元。保安服务体制在预防犯罪、维护社会公共秩序、保障社会公共安全、缓解警力不足等方面发挥了重要作用。
保安人员通过多种巡逻方式和视频监控系统，实现了对其监控地区的 “不间断的守望”。这使得保安人员可以得到第一手大量的关于其监控地区的各类情报 ，对这些情报进行初步的筛选后，可以为警察提供有效信息。保安与警察的信息的共享是双向的。警察和保安之间相互交换信息，体现了双方在社会控制上的互补性。由保安人员提供情报，警察实施抓捕犯罪嫌疑人和由警察提供情报、保安人员发现犯罪分子行踪是两种常用的模式。
Security exists widely in all aspects of social life and has formed an indelible mark on the environment and people's way of life. Security in the process of production to provide security security, imperceptibly conduct effective control of human behavior, since China's security industry started in December 1984, has spent 30 years, China's security industry is growing, the number of employees has reached 4.2 million, its market value has reached tens of billions of yuan. The security service system plays an important role in preventing crimes, maintaining social public order, ensuring social public security and alleviating the shortage of police force.
1. Crime prevention and social control
The deterrent of security personnel to criminals is mainly achieved through foot patrols and maintaining visibility. Because of the patrol of security personnel, the possibility of illegal criminals being found in the process of committing crimes and after committing crimes is greatly increased, which leads to the increase of criminal costs and the reduction of criminal opportunities, so as to reduce crimes. In addition, security personnel also control the community or public places through extensive monitoring, access control, installation of alarms and other means.
2. Quick response to illegal behaviors and crisis events to achieve social control
Security guards can make a quick response when a variety of illegal behaviors occur. Incidents related to illegal crimes, especially the current ones, need to be confirmed through the monitoring of security personnel, which makes security guards assume the responsibilities of police to a large extent. The rapid response of security personnel to illegal crimes makes them have to contact with the police. When security personnel are unable to deal with illegal criminal activities, they need to request the assistance of the police, and cooperate with the police to maintain social order and ensure social security. From the perspective of monitoring capability, security guards can carry out real-time monitoring very effectively. When the responsibilities of security personnel clearly shift to low-level crimes, security personnel will more comprehensively and effectively monitor the society at the first level. The rapid response of security guards to crisis events also plays an important role in maintaining social order. When a crisis occurs, security personnel can immediately call the police and provide them with more comprehensive and real-time information. When the police arrive at the scene to deal with the crisis, the security personnel can also assist the police to maintain order.
3. Make up for the shortage of police force to achieve social control
At present, the shortage of police human resources in China has become a consensus. Some experts have come up with the police vacuum theory, which is that when you need police help, there's always no police around. Inadequate police manpower is a universal phenomenon throughout the world. The shortage of police human resources is restricted by many aspects, such as financial budget, personnel establishment, legal procedure and so on. Therefore, it is very difficult to expand the police human resources. However, the role of security in policing is reflected in the fact that security guards are responsible for maintaining security and order in certain public places, especially "mass private property", which is open to the public. Security guards play a role in maintaining order in the "mass private property" that is open to the public, so the act of security guards is also a form of policing.
4. Collect and share intelligence to achieve social control
Security personnel through a variety of patrol methods and video surveillance system, to achieve their surveillance area "uninterrupted surveillance." This allows security personnel to gain first-hand access to a large number of different types of intelligence about the areas they monitor, which, after preliminary screening, can provide effective information for the police. The sharing of information between security guards and police is a two-way street. The exchange of information between police and security guards reflects the complementarity of social control. Intelligence provided by security personnel, police to arrest suspects and police to provide intelligence, security personnel to find the whereabouts of criminals are two common patterns.