The invention provides a radiating fan, which comprises a pedestal, a stator and a rotor, wherein the stator is fixed to the pedestal; the rotor comprises a hub and a magnetic group arranged on an inner wall of the hub; the hub comprises an end part and a side wall extending from the periphery of the end part; the magnetic group comprises a hollow shell and a permanent magnet; the shell is attached to an inner side of the side wall of the hub; the permanent magnet is attached to the inner wall of the shell; the shell comprises a cylindrical main body and an annular edgefold formed by folding outwards from a bottom end of the main body; and a top end of the permanent magnet is pressed against the end part of the hub, so that the center of the permanent magnet is moved upwards. Therefore, the magnetic bias between the rotor and the stator is increased and the adsorption force between the rotor and the stator is enhanced.