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To solve the problem of variable parameters uncertain disturbance the chattering of sliding mode variable structure control of overhead crane, a second-order sliding mode controller based on twisting algorithm is designed based on LuGre friction model and dynamic model of overheadcrane. This method use time-varying sliding mode control method to achieve the problem of the reaching phase without robust. At the same time, this method use the twisting algorithm to suppresses the uncertain disturbance in the run of overhead crane, and make the control law be a smooth signal, so as to effectively restrain the chattering.The global stability and the convergence of the designed controller are proved by using Lyapunov method. The simulation results have proved the effectiveness of the proposed control algorithm.