Abstract: A kitchen smoke exhauster comprises a housing, an air flow chamber, two motors, a bottom member, a partition, and a bottom board. The bottom member is provided with the grease exit pipe, the grease guide portion and the bevel groove to facilitate the collection of grease contained in the cooking fume. The bottom member is further furnished with left and right baffling portions preventing the contamination of food by the grease. The air flow chamber is provided with the arcuate right and left flow guides serving to enhance the smoke-removing efficiency of the kitchen smoke exhauster. Both air flow chamber and bottom member can be easily removed from the exhauster for cleaning.