The purpose of this paper was providing some experience and ready reference for people who could design a utile and abroad popular GPS vehicle monitoring system. The author demonstrated some problems existing in the vehicle monitoring system, such as digital map model errors lead to map matching errors; telecommunication system information lag results in vehicle real time position error and global position system multipath error affects vehicle position. The authors had provided some schemes for solving the problems,e. g. GIS/DR protocol for solving telecommunication system information lag, nerve cell for solving global position system multipath. Experiment showed that the solution schemes had eliminated the system errors. The solution schemes had been applied to some projects,and had acquired very good application effect.