To provide a method and an apparatus for reinforcing formation of coating or adhesion between a coating target surface and a coating film related to coatings, coating or adhesion between an adhesion target surface and an adhesive film in adhesion or adhesion.

Destruction elimination of bubbles and wetting are promoted by irradiating a coating surface to be coated with a coating or an adhesive surface to be coated with an adhesive with ultrasonic waves 20 of various kinds of required ranges of frequencies, and an adhesion target surface and an adhesive film are adhered firmly.