A coating apparatus for manufacturing a color filter substrate, comprising a roller and a resin-pressing device, the roller is provided with a plurality of openings on its external surface, the openings have a shape identical to a shape of color pixel units of the substrate to be coated, the roller is further provided with a cavity communicating with the openings, the cavity is configured for housing resin; the resin-pressing device is configured for forcing the resin within the cavity out through the openings. Also disclosed is a process for manufacturing a color filter substrate, comprising: providing a substrate, on which a predetermined area forming patterns for color filter units is provided; and coating the predetermined area of the substrate with the coating apparatus to form the patterns for color filter units.