The utility model discloses a movable dust collection furnace cover. The movable dust collection furnace cover comprises a lift rotating mechanism and a conical furnace cover, wherein the lift rotating mechanism is longitudinally fixed on a bracket (4) by two ends of a lead screw (1) through an upper bearing seat (2) and a lower bearing seat (3); a lead screw seat (5) is sleeved on the lower part of the lead screw (1); a rotating seat (6) is also sleeved on the lead screw (1) at the position of a lower bearing (1); a duplex needle bearing (7) is sleeved on the lead screw (1) in an embedding way; the lower bearing (1) is also connected with a guide plate (8); the top end of the lead screw (1) is connected with a hand wheel (9) on the bracket (4); a suspension arm (10) is fixedly arranged on the rotating seat (6) to be connected with the conical furnace cover (11). The movable dust collection furnace cover has the advantages that 1 the environment pollution is reduced, 2 the labor intensity is reduced, and the operation time is shortened, 3 the hidden trouble of safety existing in open operation of a furnace opening is solved, and 4 the movable dust collection furnace cover has a simple structure and is low in manufacturing cost.