The utility model discloses a viscous nature damping device, including viscous damper, sleeve pipe, fluid spring, first annular disk, second annular disk, third annular disk and pull rod, viscous damper includes first cylinder body, first left end lid, first right -hand member lid, first piston rod and first piston, and fluid spring includes second cylinder body, second left end lid, second right -hand member lid and second piston rod, first annular disk fixed mounting is in the left end of pull rod, second annular disk and third annular disk all move about to wear to adorn and are in on the pull rod, the setting of pull rod level can be controlled and remove, and in addition, the right -hand member of pull rod is provided with spacing boss and can passes through this spacing boss drive the third annular disk removes left. The utility model discloses used fluid spring can satisfy the requirement of value, big stroke energetically, can satisfy the requirement among the bridge design simultaneously.