Adjustable bridge anti-seismic support

The utility model belongs to the technical field of bridge engineering, and particularly relates to an adjustable bridge anti-seismic support which comprises a mounting base frame, a bearing damping mechanism is arranged above the mounting base frame, and an adjustable anti-seismic component is arranged above the bearing damping mechanism. By arranging the adjustable anti-seismic component, adjustable anti-seismic supporting can be effectively conducted on a bridge, a second bearing plate is reliably supported through a second supporting table and a stand column, during use, an anti-seismic supporting assembly is driven to ascend and descend through a lifting assembly arranged on one side of a first supporting shaft, and the anti-seismic supporting assembly acts on an anti-seismic supporting part of the bridge; the anti-seismic supporting assembly can be adjusted according to the portion, needing to be supported, of the bridge, so that the problem that an existing bridge anti-seismic support deforms and is br