The traditional bridge expansion device has no vertical, torsion and other multi-directional displacement functions, which can not meet the needs of multi-directional displacement in the process of bridge service. The prestressed multi-direction displacement expansion device is a new generation of bridge expansion device developed for the shortcomings of the traditional expansion device. The device is flexible anchored on the beam body through the multi-direction displacement system to meet the vertical, transverse, oblique and other multi-direction displacement needs of the beam end. It has the characteristics of reasonable structural design, durable, stable driving, anti-noise and waterproof performance The problem of frequent damage is solved because the traditional expansion device cannot meet the needs of multi-directional displacement of the bridge.