The invention discloses a floating population management system with an early warning function, which includes a plurality of access control hosts, a plurality of property management machines, a plurality of user terminals, a plurality of police terminals, and a server. The servers communicate with the access control host, the The property management machine, the user terminal, and the police terminal are networked. The access control host includes a control board and an access card reader connected to it, a network module, a camera, and a security warning module. The access control host is connected to the server through the network module. Aiming at the status quo of governance in urban villages, the present invention provides a complete set of comprehensive personnel management system for police officers, community village committees, property personnel, and head of household users, relying on integrated applications such as early warning data analysis, cloud platform, Internet of Things, and mobile Internet , Realized the linkage of police, community, property, and residents, and created a good living environment for ensuring community order and residents' access safety.