In order to give full play to the seismic potential of the movable support pier and improve the overall longitudinal syner? gistic effect of the continuous girder bridge， based on the principle of functional separation and synergistic force， a new type of mass rotation wrap rope device is proposed based on the mechanism of wrap rope. Taking a typical three-span continuous girder bridge as an example， the shaking table test is carried out by inputting actual seismic waves with different seismic spectrum charac? teristics and intensity as excitation， the seismic response with equal pier height model and unequal pier height model are analyzed to explore the synergistic force and shock absorption effect of the device on the continuous girder bridge. Through the test results of the response of the key positions of the structure such as the acceleration response， displacement response and strain response， it can be seen that the effect of the device on the movable bearing pier participating in the overall longitudinal synergistic force of the continuous girder bridge is more obvious， and with the increase of the ground motion input intensity， the synergistic effect of the de? vice becomes more and more prominent， the design intention of the device is realized. At the same time， the effect of the device is related to factors such as the number of wrap rope turns of the device itself， the pier height of the movable bearing pier， etc. The design needs to determine the reasonable design parameters of the device according to different factors such as the pier height to achieve the best effect of the device.