The invention discloses a magnetism suspend rail movement isolation system used for fireproofing. The magnetism suspend rail movement isolation system includes a fixed frame fixedly installed on a wall face, and a permanent magnet is fixedly installed in a separating door; after an electromagnet is electrified, the electromagnet is rejected, the separating door is suspended, a sliding space is formed in the fixed frame, and a first motor is fixedly installed on the right lateral face of the sliding space; when the electromagnet is electrified, a first magnetized rail is magnetized by the electromagnet, the first magnetized rail pushes a second magnetized rail to push the separating door upwards, so the separating door is suspended in a suspension rail, and movement is convenient; by usinga magnetic suspension theory, rapid reaction can be achieved, the wear of each mechanical part is reduced, long-term using is convenient, and the fire conditions and staff indoors can be monitored; when detecting a fire disaster, fireproofing insulation can be automatically conducted; and when people passing, emergency entrances can be automatically opened, and staff evacuation is convenient.