Electrolytic polishing is characterized by:1.polished surface does not produce metamorphic layer, no additional stress, and can remove or reduce the original stress layer; 2.difficult to use mechanical polishing of hard materials, soft materials and thin-walled, The shape of complex, small parts and products can be processed; 3.polishing time is short, but also more pieces at the same time polishing, high production efficiency; 4.electrolytic polishing surface roughness can be achieved with the original surface roughness, the general can improve two . However, due to the common electrolyte is poor, short life and strong corrosive shortcomings, the scope of application of electrolytic polishing is limited. Electrolytic polishing is mainly used for the surface roughness of small metal products and parts, such as  parts , ornaments, spring, leaves and stainless steel pipe, can also be used for certain molds.