The invention discloses a piece of combination furniture. The combination furniture comprises a cabinet body. The bottom end of the cabinet body is partitioned into a bed body placement groove and a dining table placement groove through a partition plate, a bed body is arranged inside the bed body placement groove, a table groove and a base groove are formed in the middle of the bottom end of thebed body, and the inner walls of the two sides of the base groove are each fixedly provided with a first sliding rail. According to the combination furniture, a wardrobe, the bed body and a dining table are combined into the wardrobe, the phenomenon that large space is occupied by three pieces of furniture can be avoided, the cabinet body is rotated through a fourth sliding groove, by arranging abed table and a first sliding groove, the phenomenon that a user gets out of the bed can be avoided, the base and the table are arranged at the bottom of the bed body, the base is pulled out, the table is driven by a hydraulic machine to be moved up to the proper position, when the bed body is not in use, the bed body is stored, after storage, air inside the bed body placement groove is driven andreplaced through an exhaust fan, and bacteria on the surface of the bed body can be treated through an ultraviolet sterilizing lamp.