The invention discloses a double-permanent magnet outer rotor permanent magnet-biased spherical radial magnetic bearing which comprises two parts, namely a stator system and a rotor system, wherein the stator system mainly comprises a stator upper spherical iron core, a stator lower spherical iron core, an exciting coil, a stator magnetic insulating ring, a stator upper magnetic conducting ring, a stator lower magnetic conducting ring, a stator permanent magnet, a stator sleeve and a stator locking ring; the rotor system mainly comprises a rotor upper spherical iron core, a rotor lower spherical iron core, a rotor magnetic insulating ring, a rotor upper magnetic conducting ring, a rotor lower magnetic conducting ring, a rotor permanent magnet, a rotor sleeve and a rotor locking ring. The double-permanent magnet outer rotor permanent magnet-biased spherical radial magnetic bearing disclosed by the invention can be used for overcoming the defect that moment is disturbed by radial twisting generated when the electromagnetic force of various magnetic poles is unequal, enhancing the accuracy of the gyroscopic moment of a magnetic suspension universal momentum wheel and reducing the remnant magnetic moment generated by a radial magnetic bearing.