To provide an in-vehicle smoke exhaust device for effectively ejecting cigarette smoke to the outside of a vehicle, reducing concern over impairing the aesthetic appearance of the designed vehicle and of plugging an ejecting portion with dust and dirt and avoiding the blockage of a visible view from a driver's seat.

The in-vehicle smoke control device 1 comprises a smoke ejecting fan 13 mounted to be embedded in an interior portion 7 of a roof 5 of the vehicle 3, smoke ejecting duct 17 having an inlet 15 ranging to the smoke ejecting fan 13, and smoke ejecting members 23 having openings connected with an outlet 19 of the smoke ejecting duct 17 and adapted to be mounted inside the upper and front parts of a window frame 21.