The invention discloses a device capable of adjusting the combustion speed of cigarettes. External threads are arranged at the right portion of a cigarette holder. The left portion of a circular pipe is in screw connection with the external threads of the cigarette holder through internal threads. A sleeve and the circular pipe are integrally formed. The sleeve is sleeved with a movable cover. The upper wall thickness portion and the lower wall thickness portion of the right portion of the sleeve are provided with an inner smoke vent hole and an inner vent hole symmetrically and respectively. The upper wall thickness portion and the lower wall thickness portion of the right portion of the movable cover are provided with an outer smoke vent hole and an outer vent hole respectively. The upper end and the lower end of the outer diameter end of the left portion of the sleeve are provided with symmetric square columns respectively. The upper wall thickness portion and the lower wall thickness portion of the left portion of the movable cover are provided with corresponding strip-shaped holes respectively. The circular pipe, the sleeve, the square columns and the movable cover are made of transparent glass. The device can adjust the combustion speed of the cigarettes, and can easily achieve combustion termination in the halfway.