Video surveillance equipment seems to be everywhere, but there are no unified regulations on the specific occasions where it must be used. Ning Wensheng, deputy director of the Science and Technology Department of the Shaanxi Provincial Public Security Department, said that the production of currency, securities, bills, or Centralized storage places; printing and storage places for national or provincial unified examination questions and test papers; important parts of national key cultural relics protection units and state-owned museums and archives; radio, television, and urban water, electricity, fuel (gas), and heat supplies Monitoring equipment must be installed in important parts of the unit; public entertainment venues, entrances and exits of residential areas, and main passages. In addition, video surveillance equipment must also be installed in important parts of public activities and gathering places such as highways, urban roads, schools, hospitals, parks, large squares, etc. Failure to install it is illegal. In summary, it is not difficult to see that there are not many places where security monitoring equipment is not installed. Almost many places need to install it, especially public places. The installation of security monitoring equipment has played a vital role in people's safety, especially in the detection of cases.