Abstract: A quick assembly table and an installation method is disclosed. The table includes a tabletop and legs. The legs are evenly arranged at a bottom of the tabletop, a sliding slot is disposed at the bottom of the tabletop, the legs slide along and fit into the sliding slot, the legs are connected by an annular beam in between, the annular beam is fitted with a locking screw, and the locking screw expands or shrinks the annular beam to push the legs to slide along the sliding slot. The tabletop and legs are installed in a slide-and-fit manner without screws, and are convenient to assemble and disassemble. In addition, relative locations between all the legs and the tabletop can be adjusted synchronously through expansion or shrinkage of the annular beam, making adjustment flexible and convenient.