The invention relates to a horizontal large-size cylinder rib rolling machine, falling into the field of central air-conditioning end fan processing device. The invention is characterized in that a propelling gearbox and a propulsion motor are arranged above a base and connected with a driving press roller gearbox via a propulsion screw rod, a driving press roller motor is arranged above the driving press roller gearbox, a slider is arranged below the driving press roller gearbox, a driving press roller, a driven roller, and a cylinder piece are sequentially arranged on the right side of the driving press roller gearbox, and large and small gears are arranged at the bottom of the driving press roller and cylinder piece traction wheels are arranged at the bottom of the cylinder piece. The invention can produce cylinder with diameter ranging from 0.2 to several meters, reduce production cost by 30% and the thickness of outer cylinder steel plate, and has advantages of simple and semi-automatic operation, very long service life, and low operation noise.