The invention provides an axial centrifugal fan. The axial centrifugal fan comprises a cylindrical machine case, an air inlet, an air outlet, an inlet air collector, a centrifugal impeller, a motor supporting cylinder, a motor, an air baffle ring and a guide vane, wherein the air inlet is formed in the axial front end of the machine case, the air outlet is formed in the axial tail end of the machine case, the inlet air collector, the centrifugal impeller and the motor supporting cylinder are sequentially arranged in the machine case from the axial front end to the axial tail end, the motor is arranged in the motor supporting cylinder, the air baffle ring is arranged between the machine case and the centrifugal impeller in the radial direction, and the guide vane is arranged between the machine case and the motor supporting cylinder in the radial direction. The centrifugal impeller comprises a hub, a front wheel disk, blades and a rear wheel disk, wherein the hub is connected to a main shaft of the motor, and the front wheel disk, the blades and the rear wheel disk are sequentially arranged from the axial front end to the axial tail end. The rear wheel disk comprises a first arc-shaped body. The air baffle ring comprises a second arc-shaped body. The first arc-shaped body and the second arc-shaped body are both bent towards the direction along which gas flows to the air outlet easily in appearance. The axial centrifugal fan has the advantages that the size is small, installation is convenient, the noise is low, the air volume and the pressure can be designed according to needs and the operation efficiency is high.