In the mountain torrent disaster warning system, how to use high-performance embedded microcontroller controller and low consumption technology are the key problem. This paper designs a wireless sensor network (WSN) to adapt the request of mountain torrent disaster early-warning system. The sensor node collects the information such as soil water content, permeability coefficient, displacement and rainfall, etc. To realize real-time data storage and process, the gathering node receives the real-time data and sent it to information center through GPRS networks. The system replaces the cable transmission mode with the wireless transmission way, which can reduce the costs of installation and maintenance, and improve the system reliability and expansibility. This system must have a wide application prospects.
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