The work aims to improve finishing quality of non-magnetic outer surface by comparing the finishing effects of various magnetic abrasive particles and finding the magnetic abrasive particles exhibiting better processing effect. With 6061 aluminum alloy tube as object of study, finishing experiments were carried out with different types of magnetic abrasive particles under the same conditions. Changes in roughness value of samples before and after finishing were tested with a roughness measuring instrument. Changes in mass of samples before and after finishing were tested with an electronic balance, and material removal rate (MRR) of various magnetic abrasive particles was obtained. In order to further compare finishing performance of various magnetic abrasive particles, ultra DOF microscope was used to observe changes in morphology before and after finishing. After experiment testing, Ra value decreased from initial 0.326 μm to 0.286 μm, Rz value decreased from initial 2.34 μm to 1.95 μm, and MRR was 0.26 μm/min when the bonding magnetic abrasive particles were used. The Ra value decreased from initial 0.346 μm to 0.303 μm, Rz value decreased from initial 2.42 μm to 2.09 μm, and MRR was 0.195 μm/min when simply mixed magnetic abrasive powders were used. Processing limit was reached, Ra value decreased from initial 0.332 μm to 0.146 μm, Rz value decreased from the initial 2.25 μm to 1.05 μm, and MRR was 0.651 μm/min when viscoelastic magnetic abrasive particles were used in 6 minutes. Compared with other kinds of magnetic abrasive particles, viscoelastic magnetic abrasive particles have better finishing effect, and surface quality of sample is greatly improved.