With the increasing quantity and position of vehicles in people’s daily life, the security problems of vehicles have been paid more and more attention. At present, the medium and low-end cars and truck positioning, monitoring and anti-theft function have not been popular. Facing the imperfect function and unfriendly software design interface problems, it can not meet the users’ need. This paper adopts C/S structure to design a vehicle security system. It can realize the remote monitoring, vehicle carrier talk, fatigue driving monitoring, remote fortification and call alarm functions, ensuring the vehicles for 24 hours in the monitoring state, improving the vehicle usage safety coefficient. The system can have stable and reliable operation, and the data can conduct uninterruptedly transmission, and the interface is friendly and the operation is strong.