A rotatable accessory includes a table top and a flipping mechanism. The flipping mechanism includes a first connecting portion and a second connecting portion. A compression spring is arranged between one side of the first connecting portion and the second connecting portion. The first connecting portion and the second connecting portion are each provided with a first blind hole facing the compression spring. Both ends of the compression spring respectively extend into the two first blind holes and abut on the bottom surface of the first blind hole. The other side of the first connecting portion and the other second connecting portion are connected by a guide hole and a guide column. The rotatable accessory can be mounted on a chair or a bed to allow users to place portable small objects such as mobile phones and cups on the rotatable accessory.