The invention belongs to the technical field of magnetic levitation and relates to a levitation distance self-stabilizing and adjusting maglev system. The levitation distance self-stabilizing and adjusting maglev system comprises a supporting magnet, a levitation magnet and an adjusting unit used for adjusting a distance between the levitation magnet and the supporting magnet; the supporting magnet is fixedly arranged on a rigid support; the levitation magnet is magnetically connected to the supporting magnet; the adjusting unit is a high temperature superconductor; the adjusting unit is fixedly connected with the levitation magnet; the adjusting unit is in a magnetic field of the supporting magnet; the invention further relates to a levitation distance self-stabilizing and adjusting maglev track motion device; the levitation distance self-stabilizing and adjusting maglev track motion device comprises a vehicle body and further comprises the levitation distance self-stabilizing and adjusting maglev system; the rigid support is a track; the levitation magnet and the adjusting unit are fixedly connected with the vehicle body; the high temperature superconductor is positioned in the magnetic field of the supporting magnet; and when the distance between the supporting magnet and the levitation magnet is changed, the adjusting unit instantly generates a force for resisting distancechange so that the distance is kept stable.