With the purpose of discussing the feasibility of solid lubricant coating in resisting torsional fretting wear application,the torsional fretting finite element analysis of MoS2 coating was performed.The effect of torsional angular displacement,normal loading,coefficient of friction on the coating contact surface mechanics behavior was investigated,which was compared with the mechanics behavior of the substrate.Analytical results indicate that damage caused by cracks initiation and propagation in the mixed slip regime is eliminated by the transformation of the fretting running regime.The plastic strain of MoS2 coating surface is bigger than that of the substrate under the partial slip and gross slip running region,but lesser friction shear stress can not start coating crystals slipping in partial slip region and sufficiently cut plastic flow layer in gross slip region.Consequently,MoS2 coating surface has slight wear,MoS2 coatings can effectively display resisting torsional fretting wear action.