The EHIGH UWB indoor positioning system is composed of hardware positioning equipments, positioning engine and application software. Its APP is accessible via PC and mobile phones, and it provides a range of services such as real-time position display, history playback, personnel attendance checking, electronic fence, behavior analysis, smart inspection and so on. The positioning precision can be up to 10cm, and meanwhile, it is featured by high dynamic properties, high capacity and low power consumption. It is applicable to tunnels, prisons, chemical industry, factories, coal mines, construction sites, power plants, nursing homes, exhibition halls, vehicles, equipment rooms, airports and so on.