A coating method is provided for forming a liquid-repellent coat on a predetermined partial region of an inner surface of each through-hole of a nozzle plate. The nozzle plate is provided in an ink-jet head of an ink-jet printer. The coating method comprises the steps of: forming a coat preform on a region including the partial region of the inner surface; supplying a mask material having ultraviolet ray absorbability into the coated through-hole; irradiating ultraviolet rays onto the base material to partially decompose and remove the coat preform on the inner surface; and removing the mask material in the through-hole to obtain the nozzle plate partially coated with the liquid-repellent coat. The coat preform removal is conducted through the use of attenuation of the ultraviolet rays by means of the mask material or through the combined use of the ultraviolet ray attenuation and the presence/absence of the mask material.