The wind turbine acceleration gear model is established in accordance with the parameter accurate design method.Then three dimensional finite element models are built according to the gear pair of load and structural features.The contact dynamics analysis of wind power acceleration gears meshing are carried out.During the gear pair meshing process

tooth contact stress and tooth root bending stress are obtained under different times.And the tooth root stress and the tooth stress change trend in gear meshing process is analyzed detailed.It provides the valuable theoretical basis for further research on optimization design and analysis of the wind turbine acceleration gear.