Research conclusions :(1)Lanzhou Berlin geological disease mainly is filling soil deformation along the old ground peristalsis，accompanied by uneven ground settlement. ( 2 ) The causes of diseases mainly field usually on the filling no effective treatment，coupled with the strong collapsibility, lead to ground surface crack，surface water area of infiltration，convergence in the soil the old ground contact zone，and then cause the surface deformation.(3)The infiltration of surface water is the main site of disease induced factors，so the project management must adhere to the ，，controlled drainage，retaining engineering subsidiary，foundation treatment after" principle，according to the field monitoring data, the project provided reasonable，control effect is obvious. ( 4 ) This paper points out that the filling of slope site must be processed effectively，to fill in the initial site leveling, otherwise no end of trouble for the future. (5)This paper similar loess soil has a certain reference significance for analysis and treatment of diseases of the slope site in the similar loess area.