Abstract: Compared with the traditional limit equilibrium,the strength reduction method has many advantages. The computational procedures and the yield guidelines are important factors that affecting safety factor through strength reduction. Taking a certain complex slope for an example,through ANSYS-ADINA and ANSYS-FLAC interface program,a mesh model of ADINA,ANSYS and FLAC is established to overcome the grid coefficient on the safety factor. M-C and D-P criteria are respectively selected in the calculat...