Surface polishing treatment method for copper-tungsten parts of copper contact finger and optical communication base

The invention discloses a surface polishing treatment method for a copper contact finger and an optical communication base copper-tungsten part, and belongs to the technical field of surface polishing, the surface polishing treatment method comprises the following steps: S1, preparation before coarse grinding: adding a ground copper contact finger product or an optical communication base copper-tungsten product, a plastic grinding stone, a diamond grinding liquid, zinc stearate and tap water into a grinding machine; s2, coarse grinding: after coarse grinding is carried out for 1-1.2 hours, waste water is discharged, and coarse grinding is carried out again; s3, preparation before fine polishing is conducted, specifically, the copper contact finger product or the optical communication base copper-tungsten product obtained after rough grinding, zirconium oxide polishing balls, a grinding brightener and tap water are added into a grinding machine; s4, fine polishing is conducted, specifically, the fine polishing