Abstract: Lishi area of Longsheng, Guanxi province is located at the junction belt between the sub-tectonic units in Yangtze Plate and folded South China plate. In the orogenic phase of Middle-Caledonian, the area is located at in the front deformed of folded zone in South China plate, complicated geologic conditions, tectonic deform is strong, it is formed that adsorb linear folded and nappe structure, have good metallogenic geologic conditions, it is a most potential prospecting area in Guangxi Province. But the area is located at the north of Guangxi Province, connects with Hunan Province, belongs mountain and dense forest region, the mountain is high and precipitous, dense forest and broad covered, research degree is relatively low, so the method used in exploration of traditional is difficulty, high cost and the effect are not obvious. But RS' Spatial and spectrum information is rich, the terrain conditions is unlimited to obtain information and geochemical dispersion train can fast localization quantitative extraction of ore-forming information, and this thesis focuses on remote sensing technology and dispersion train for prospecting prediction W-Sn polymetallic deposits.