Smoke exhaust device

The utility model relates to a smoke exhaust device which comprises an exhaust pipe, two fixing frames are arranged on the peripheral face of the exhaust pipe, a base is arranged below the exhaust pipe, two containing grooves are formed in the top of the base, and the shapes and the positions of the two containing grooves are matched with the shape and the position of the exhaust pipe. A containing groove is formed in the top of the base, a direction adjusting mechanism is arranged in the containing groove, and the direction adjusting mechanism drives one end of the exhaust pipe to move in the height direction of the base. And a limiting assembly is arranged on one side of the base, and the situation that the height of the exhaust pipe is changed due to accidental touch when the mechanism works is avoided through the limiting assembly. The utility model relates to the technical field of smoke exhaust. The height of the exhaust end of the exhaust pipe can be adjusted through the direction adjusting mechanism,