This paper using finite element method analyzed present slope and contrasted it with the original slope shape, plastic deformation figures and stress changes. At the same time, some deformation figures and stress figures were got, and the potential sliding surface and the stability coefficient were calculated. The conclusions are: This slope is provided with sliding conditions and began to slide when its foot was cut without any support in time. At the foot of the slope, some support measures must be taken to keep the slope steady and the slope surface need to be stabilzed to protect the lower people. These suggestions and conclusions are also useful to the slope constructions and succeeding inspecting works. This paper using finite element method analyzed present slope and contrasted it with the original slope shape, plastic deformation figures and stress changes. At the same time, some deformation figures and stress figures were got, and the potential sliding surface and the stability coefficient were calculated The conclusions are: This slope is provided with sliding conditions and began to slide when its foot was cut without any support in time. At the foot of any support in time. Some support measures must be taken keep to the slope steady and the slope surface need to be stabilzed to protect the lower people. These suggestions and conclusions are also useful to the slope constructions and succeeding inspecting works.