The present invention discloses a multi-stage height-adjustable table, including an operation control member and a table leg assembly arranged on the table board. The inner leg of the table leg assembly is sleeved in the hollow outer leg, and the inner leg has a containing groove for accommodating the elastic element. Operate the control element and move the table board according to the manipulation to drive the operation of the actuation unit of the operating wire linked to the table leg assembly. When the wire is operated on the wire, the inner leg can be lifted and lowered in the hollow outer leg. Then manipulate the operating control to make the operating wire in the pay-off state, and the actuation unit will abut one of the positioning parts of the inner leg post to form a position-fixed state, and adjust the height of the table accordingly.