Abstract:The artifical rainfall modeling test in lab and stability analysis of slope are made on the effect of erosion on slope of municipal solid waste in the situation with and without vegetation. The law of rainfall erosion to the slope surface of municipal solid waste is studied under three kinds of rain intensity,40,60 and 100 mm/h. The results show that the erosion intensity to slope surface rises along with the rain intensity. But the vegetation decreases the erosion intensity and increases the stability of slope. The erosion module is decreased to zero after two months of vegetation,and the phenomenon of slope surface erosion disappears then.