The invention discloses a spherical magnetic bearing with double Halbach arrays and Lorentz force. The spherical magnetic bearing comprises a rotor system and a stator system. The rotor system mainly comprises an outer mounting sleeve, outer Halbach array magnetic steel, an outer magnetism isolating ring, outer magnetic conductive rings and an outer assembly lock nut; the stator system mainly comprises an inner mounting seat, inner Halbach array magnetic steel, an inner magnetism isolating ring, inner magnetic conductive rings, frameworks, windings, epoxy resin glue and an inner assembly lock nut. The spherical magnetic bearing has the advantages that the spherical magnetic bearing is of a Halbach array magnetic steel structure, accordingly, the intensity of magnetic fields of air gaps can be enhanced, the bearing capacity and the support stiffness of the spherical magnetic bearing can be improved, and deflection torque of the spherical magnetic bearing can be enlarged; magnetic density fluctuation of the magnetic steel due to splicing gaps can be eliminated by the magnetic conductive rings, and accordingly the internal magnetic density uniformity of the air gaps and the precision of the deflection torque of the spherical magnetic bearing can be improved; the surfaces of magnetic poles are spherical surfaces, magnetic lines of force are always perpendicular to the spherical surfaces of the magnetic poles when penetrating the windings, the magnetic density and the direction of winding locations cannot be changed before and after deflection, and accordingly the precision of the deflection torque of the spherical magnetic bearing further can be improved.