The invention discloses an anti-drowning system applied to various water areas, which comprises an information sensing unit composed of a camera, a loudspeaker and a sound pick-up, a communication unit connected with the information sensing unit and used for transmitting signals, an intelligent detection unit connected with the communication unit, and an administrator handheld terminal which is connected with the intelligent detection unit, wherein the camera, the loudspeaker and the sound pick-up are arranged in the water areas. Personnel or vehicles in a dangerous area are automatically recognized through the camera and the image processing technology, personnel involved in accidents are warned to leave through the loudspeaker, meanwhile, an administrator is informed through the handheldterminal, all-weather 24-hour monitoring is achieved, the monitoring range is widened, the labor cost is reduced, and the risk of labor careless omission is reduced. In addition, the identity of thestaying person can be recognized through big data, information of the staying person can be pushed to a related responsible person, when a dangerous situation occurs actually, the unmanned aerial vehicle can be dispatched to carry a rescue tool to directly reach the sky of a person involved in danger for precise rescue, and the rescue efficiency is greatly improved.