Abstract: Based on the study of the existing grinding technology, a new grinding process which can realize tooth profile modification is put forward. The gear tooth surface is grinded by an inclined cubic boron carbide grinding disc. Based on Vericut machining simulation verification, this grinding method can realize gear tooth profile modification and full tooth width grinding. The contact analysis of the tooth surface of the gear pair is carried out by using the simulated gear, and it is found that the contact interval is mainly distributed in the middle part of the tooth surface, which can effectively reduce the meshing partial load of the gear pair and improve the stationarity of the gear transmission. According to the geometric position relationship between the grinding track of the grinding disc and the circular cutting plane of the machined gear section, the drum shape control adjustment model is constructed, and it is concluded that the drum shape can be controlled by the installation angle of the cubic boron carbide grinding disc, which can ensure the accuracy and stability of the tooth modification.