Abstract: In order to improve the theory on plane swinging polishing, the removal model of plane swinging polishing is founded based on Preston equation, and the relationship between the removal appearance and the machining parameters is acquired through removal simulation of every point in the case of different machining parameters in Matlab. A validity test on a fused silicon with an aperture of 430 mm430 mm was performed in different parameters, the results through contrasting the removal appearance after simulating and the surface appearance after processing show that this removal model can correctly forecast the removal quantity in different machining parameters, this proves that the model can accurately and effectively control the swinging polishing process.