1, the definitions of security officer and security guard are different.

According to the National Law on Work Safety, safety officers should do a good job in daily supervision, inspection, spot check, training, rectification, prevention, dust removal and cleaning, security inspection, fire prevention, theft prevention, explosion prevention and poisoning prevention, equipment maintenance and management, safety tips, etc. in stations, automobiles, supermarkets, hospitals, schools, enterprises, meeting places, entrances and exits. As a team leader and operator, and hold relevant certificates.

Security refers to the maintenance of public order, which is a professional type of work. Its main responsibilities are fire prevention, theft prevention and personal safety in the responsible area. Through the implementation of security personnel's work, ensure the safety, normal working order and public order in the fixed area, and prevent problems before they happen.