Provided is a low-speed magnetic levitation rail connecting fastener characterized in that the middle-low speed maglev rail connecting fastener comprises an iron cushion plate (11), an elastic cushion plate (9), a height adjusting cushion plate (10), an anchoring bolt (12), a buffer distance adjusting block (8), a fastening nut (3), a high-strength large hexagon nut (4), a heavy-duty spring washer (5), a vibration-absorbing gasket (6), a vibration-absorbing gasket cover plate (7) and a plastic protective sleeve (2); The anchoring section of the anchoring bolt (12) comprises a central circularplatform (12B) for effectively supporting the iron cushion plate (11) and providing an assembly platform. As that anchor bolt of the connecting fasten adopts a novel structure type with special design, the setting of the circular platform in the middle of the screw can effectively support the iron pad plate, reduce the contact gap with the bottom of the iron pad plate, effectively improve the integral assembly precision of the fastener, and is favorable for ensuring the high precision maintenance of the maglev rail row.