The utility model discloses an air box disc groove component shaping device. Side support posts are welded on the two ends of a base; an upper support base and a lower support base which are welded into a framework by using groove steel are arranged on the upper and lower sides of the side support posts; a lower base membrane is fixed on the lower support base of the inner frame of the framework; a guide rail is fixed on the inner post of each side support post and above the lower base membrane; a hydraulic cylinder is fixed at the central position of an upper support post of the inner frame; a hinge shaft hinged by using a hinge is arranged on the head part of an expansion link of the hydraulic cylinder; an upper base fixing plate is connected to the hinge shaft; the upper base fixing plate is connected with an upper base membrane through a connecting block; a pressing plate is arranged on the lower edge of the concave membrane of the upper base membrane, and a clamping groove is formed between the pressing plate and the lower edge of the concave arc of the upper base membrane; sliding blocks are arranged on the two sides of the lower base membrane. The air box is formed by combining and pressing the upper and lower base membranes in the technical scheme, so that the positioning is precise, the determination on the nature of the air box disc groove and close fit of an inner flange and the disc groove surface are guaranteed, and accordingly the production quality of the air box disc groove is ensured.