Rotary base, support and displayer

The utility model relates to the technical field of article supports, and particularly discloses a rotating base, a support and a displayer. The base comprises a bottom plate, a connecting seat and a rotating structure, a first sliding groove is formed in the upper surface of the bottom plate, the bottom plate is vertically through to form a stepped hole, and the first sliding groove surrounds the stepped hole; the connecting base is arranged above the bottom plate, and a second sliding groove is formed in the lower surface of the connecting base. The rotating structure comprises a bearing, a ball and a fixing rod, the bearing is arranged on the lower portion of the bottom plate, installed in the stepped hole and arranged between the bottom plate and the connecting base, the upper portion of the ball is connected into the second sliding groove in a rolling mode, and the lower portion of the ball is connected into the first sliding groove in a rolling mode. One end of the fixing rod abuts against the inner rin