As a＆quot;wisdom water conservancy＆quot;, mountain torrent disaster monitoring and early-warning system is an especially information part of flood prevention and drought resisting information support, and plays a very important role in the flood prevention and drought resisting in the water conservancy industry. Therefore, by taking Leibo County of Liangshan Yi autonomous prefecture （an area with frequent mountain torrent disaster in Sichuan province） as an example, the implementation plan of mountain torrent disaster monitoring and early-warning system is reviewed in this paper.