Abstract: Water and soil loss in Poyanghu Lake basin has brought serious disasters. On the basis of the historical and current water and soil loss situation, the paper narrates the characteristics, the erosion types and the spatial distributions of the water and soil loss, and expounds their formation causes and influencing factors. In combination with the different water soil loss regions where there are different erosion types and different erosion strengths, the corresponding countermeasures are respectively presented.

Key words: Poyanghu Lake , basin , water and soil loss