Adsorption device and motion platform

The utility model relates to the technical field of sports tables, and discloses an adsorption device and a sports table. The adsorption device comprises a suction cup assembly, a mounting base and a locking assembly. The sucker assembly is used for supporting a substrate. The mounting base is annular, a mounting groove is formed in the mounting base, and the suction cup assembly can be embedded in the mounting groove; the locking assembly comprises a locking screw and a pressing block, a threaded hole extending in the radial direction is formed in the side wall of the installation groove, a positioning hole extending in the radial direction is formed in the side wall of the suction cup assembly, the pressing block is installed in the positioning hole, a conical groove is formed in the end, close to the locking screw, of the pressing block, and the end of the locking screw is conical. The locking screw is in threaded connection with the threaded hole, and the end of the locking screw abuts against the conical