Taking the power of 3 M W wind turbine growth box for example, the analysis-simple mod-e1 of the basic components of the carrier and gear has been established in PRO/E, and the three-di-mensional finite element contact model is generated in the ANSYS, on the premise of meshing, load-ing and Solving of the model, obtaining the elastic deformation under rated loads data, The resultshows that:stress concentration is found in the planet carrier under the rated load and is mainly in thepower input shaft part of the planet carrier, and the maximum displacement is found in the drive shaftpart under the role of the load, and the maximum stress of the basic planetary gear drive componentsby analysis calculation and checked drawn is less than the material yield limit, meeting the strength ofthe material.Key words: