In this paper, a review of past and recent developments in the wind turbine drive train is being studied. The objective is to review some of the basic approaches of drive train configuration in wind turbines and to identify drive train models including the modeling and simulation results of these models. In recent years, considerable effort has been devoted to modeling, design, and control of wind turbine including drive train .The number of publications on computational strategies (multibody dynamics) are widely used for design and simulation of wind turbines components has been steadily increasing.