Résumé dans la langue de publication A painting device capable of shortening a color change time by the preparation of feed units (20A to 20H) for each color paint, wherein unit standby devices (35A to 35H) for each color are arranged near a painting robot (1), the unit standby devices (35A to 35H) are formed of feed unit attaching and detaching devices (36) for attaching and detaching feed units (20A to 20H) on and from a rotationally atomizing head type painting machine (6) mounted at the tip of an arm (4) of the painting robot (1) and a standby device side hose holding device (40) for delivering supply hoses (30A to 30H) with an arm side hose holding device (32) mounted on the arm (4), whereby the feed units (20A to 20H) for each color can be mounted interchangeably between the rotationally atomizing head type painting machine (6) and unit standby devices (35A to 35H) for each color change.