Abstract: The phenomenon of superconducting magnetic levitation is essentially that the force of the magnetic moment of a superconductor in an inhomogeneous magnetic field equalizes to its gravity accurately. Because the pinning effect，the magnetic moment of the imperfect type-II superconductor is of diamagnetism or paramagnetism as the magnetic field’s change，so the superconductor may appear to be suspended over a magnetic gorge，or flied below the magnetic gorge.

Key words: superconducting magnetic levitation, superconducting magnetic flying, magnetic moment, pinning effect, inhomogeneous magnetic field