By setting a robot installing area (5) at a higher pressure than an adjacent painting area (2), there is formed an air flow (ra) which flows from the robot installing area (5) into the painting area (2). With this, in a painting facility (1) in which a painting object (W) is painted by paint spraying from a spraying means (4) while displacing the painting object (W) held to an arm leading end portion (7a) of a painting robot (6) relative to the spraying means (4) by an action of the painting robot (6), adhesion of paint to the painting robot (6) and to a painting area lateral wall is prevented.