Abstract: The stability of rock slope is mainly controlled by discontinuities of rocks.Studying the stability analysis method of jointed rock slope possesses important theoretical significance and engineering value.With the engineering case as background，the processes and methods of calculation parameters of rock and discontinuities are firstly given through field tests and laboratory tests.Secondly，based on the strength reduction theory，the strength reduction program is written using FISH language and it is applied to the Ubiquitous-Joint Model.Thirdly，the method that thin layer of material is used to simulate rock discontinuities is proposed and then the limit equilibrium method is applied to calculate the slope safety factor.Finally，the stability of rock slope containing a set of preferred structure plane is calculated respectively by the finite difference method，the discrete element method and the limit equilibrium method.The calculated results show that the slope safety factors by the three methods above and the potential failure mode are consistent.The research findings provide effective methods to make the stability evaluation of similar slope projects.

Key words: Discontinuities, Strength reduction method, Finite difference method, Discrete element method, Limit equilibrium method, Consistency