Abstract: Aiming at this phenomenon that gears produce regular and mutually parallel tooth surface textures along the tooth direction during grinding are more likely to cause large gear meshing noise, a tooth surface texture active regulation method based on multi-axis synchronous additional motion of a flexible electronic gearbox was proposed. Firstly, the mathematical models of tooth surface and grinding wheel surface and tooth surface texture angle were established. Secondly, the additional motion was applied to the motion axis to establish the relationship between tooth surface texture angle and additional motion polynomial coefficient.Then, the sensitivity matrix combined with least squares estimation was used to determine the additional motion polynomial coefficient of the motion axis to obtain the target texture angle. Finally, the gear grinding texture after additional motion of the motion axis was simulated and compared with the texture generated by conventional machining and low noise shifting technique. The simulation results show that the method of additional motion of the motion axis can obtain the tilted irregular tooth surface texture, which proves the feasibility of this method.