User location management system based on information sharing

The invention relates to a user location management system based on information sharing. The system comprises: a first terminal, a second terminal and a cloud processor; the first terminal is a security terminal, and a user sets a specified first terminal in an account in the cloud processor as the security terminal; the second terminal is a portable terminal of the user; the first terminal comprises a first positioning device and a first wireless communication device; the second terminal comprises a second positioning device and a second wireless communication device; the first positioning device and the second positioning device are used for positioning current terminal location information; the first wireless communication device, the second wireless communication device and the cloud processor communicate with each other; and the first terminal sets a safe distance with the second terminal, if a real-time positioned distance between the first positioning device and the second positioning device exceeds th