The GPS global positioning system is a suite of satellite system which is composed of 24 satellites and can continuously send time and position information to the Earth's GPS receiver. Through decomposition and calculation, it can give various kinds of information of mobile bodies. At present, this positioning system has been widely used. In geochemical exploration, it is mainly used in such aspects as pinpoint, navigation and flight path monitoring, thus providing guarantee to field work quality monitoring. Combined with MapSource and MapGis softwares, it can realize management of geochemical data based on information and compilation of various geochemical maps, thus remarkably reducing the labor intensity of geochemists.