The invention relates to a polishing method set according to polishing equipment, wherein the polishing method comprises abrasive material preparation, clamper installation and starting, spraying nozzle adjustment, abrasive material pre-stirring, air pump starting, abrasive material recovery, and other steps. The present invention further provides polishing equipment for 3D sapphire, wherein the polishing equipment comprises a working table and a rotation base arranged on the working table, the rotation base is provided with a clamper for fixing a 3D sapphire part, a spraying gun fixed on the working table is arranged beside the rotation base, the spraying nozzle of the spraying gun is aligned with the 3D sapphire part on the clamper, the gas inlet of the spraying gun is connected to a gas pump through a gas conveying pipe, the gas inlet of the gas pump is connected to a material bin filled with a abrasive material, and the abrasive material is a rubber ball and/or ceramic ball with diamond micro-powder adhered on the surface. According to the present invention, the rubber ball and/or ceramic ball with diamond micro-powder adhered on the surface is sprayed through the spraying gun and impacts onto the processed surface of the sapphire part, the grinding force is provided for the rough surface of the part by using the impacting force of the diamond micro-powder, the polishing is uniform, and the polishing effect is good.