ABAQUS is the advanced general nonlinear finite element analysis software, which has very obvious advantage in solving nonlinear problem. The contact nonlinear analysis of high duty bolted joints was conducted about the tower of wind turbine with ABAQUS. Statics performance was simulated in the conditions of pretightening and ultimate load. The Von-Mises stress and the displacement contour images were acquired for the structure of flange and bolts. The calculation results show that bolted joints' stress of tower is mainly influenced by the preloaded force. The maximum stress of bolts increases 17% by the action of ultimate load, and the maximum displacement increases approximately two times. The results prove that the strength and stiffness of tower bolted joints meet the design requirements. The analysis provides theoretical basis for designing of wind turbine.