The utility model discloses an air-assisted hydraulic air booster pump for a maglev train. An air cylinder assembly is fastened and connected with a hydraulic cylinder through a connecting cover; a respirator assembly is arranged on the connecting cover; a gas piston and a hydraulic piston assembly are connected through a push rod penetrating through an inner hole of the connecting cover; the push rod is connected with the hydraulic piston assembly through a push rod base; inside the hydraulic piston assembly, a hydraulic piston seal base is arranged, and seal rubber is arranged on the side, facing to the push rod base, on the hydraulic piston seal base. Through the adoption of the technical scheme, the direction of the rubber seal surface is changed, and impact of high pressure oil to the front side of the seal rubber is avoided; a guide ring is additionally arranged to the gas piston to avoid single-side abrasion of a leather collar of the gas piston; a support ring is additionally arranged to avoid the falling off and abrasion of a Y-shaped ring; through the improvement on the respirator, the cleanness of the air cylinder assembly is guaranteed, so that the reliability the product is improved and service life of the product is prolonged.