In order to improve the unreliable current situation of metal mine monitoring system, we put forward a monitoring system which contains both environment monitoring and personnel positioning based on WSN. Fist of all, we introduce the structure of the system and the meaning of every component, then we design the hardware of base-station including End-point, Router and Coordinator and ID card. And then, we discussed which personnel positioning algorithm should be used in this metal mine. At last, we introduce the GIS management platform and how does it work on GIS management platform.