Huaying city is a precious land with rich resources of mineral,energy and agriculture, being convenient in transportation and developed in industry and agriculture. As the resources is exploited and taken gradually, the natural ecological environment is being frequently. The main disasters often destroyed, mountain disasters occur seen are these, i, e,soil and water loss, collapsing, slop sliding, debris flow，mountain torrents and so on, which cause great loss in economy，and damage fields and houses terribly every year, threatening the safety and property of the local residents,The harness measures are to stablize the gully slope and sliding mass of the slope, to block the loosening solid material coming from branch ditches and upper reaches, to dredge the channels and protect the section for flood to come through, and to construct new channels in order to lead the mountain torrents and debris flow into predetermined section for the harmfulness to be avoided or reduced.