Abstract: The discrepancy of the mountain flood in the different regions in our country is obvious. The paper investigated and researched the mountain flood in Hunan province and Shaanxi province. The results showed that the main mountain flood disasters in Hunan province are brook and river floods and landslide hazard and the distributing bound is according with that of the rainstorm’s center. In Shaanxi province, brook and rivers floods, landslide and debris flow hazard are common, which lie in Qinba region, and the kinds of disasters account for half of the gross in the whole province.