In conventional grinding processes, continuous generating gear grinding often produces parallel and regular texture along the lengthwise direction. Compared to the irregular flank texture generated by gear honing, regular texture usually results in higher engagement noise. To change the shape of the grinding texture, we propose an active control method for continuous generating grinding gear tooth flank texture using an electronic gearbox with superimposed micromotion. Analyze the formation mechanisms of gear tooth flank texture from both macroscopic and microscopic perspectives, based on the principles of tooth flank texture creation under multi-axis linkage control. Alter the interpolation point values in the machine tool NC program for the grinding experiments. Observations of the gear tooth flank morphology using a white light interferometer reveal that the micromotion grinding method generates irregular and mesh-like tooth flank texture compared to the regular tooth flank texture produced by conventional grinding. This confirms the effectiveness of the proposed method.