The invention discloses a permanent magnetic and electromagnetic mixed radial bearing, which consists of a rotor core, permanent magnets, stator cores, coils, an air gap and auxiliary air gaps, wherein magnetic poles of four stator cores are uniformly distributed on the circumference along four directions of +X, -X, +Y and -Y, and are wound with the coils at the periphery; four permanent magnets are embedded between magnetic poles of two adjacent stator cores at intervals, and are arranged at 90 degrees on the circumference of a stator; a certain gap is reserved between the inner surfaces of the stator cores and the outer surface of the rotor core to form the air gap; the auxiliary air gaps with different sizes are formed between stator cores on two sides of the permanent magnets; and sectional areas of magnetic poles of the stator cores with different sizes are adopted in the bearing direction. The bearing solves the problem of heavy weight of the conventional permanent magnetic and electromagnetic mixed radial bearing, and has the advantages of small volume, low energy consumption, reliable performance, contribution to control and the like.