The invention provides a range hood. The range hood comprises a wind wheel and also comprises a spiral case, a cleaning brush and a driving device, wherein a plurality of openings which are projectedon the wind wheel are formed in a spiral case coaming; the cleaning brush comprises a plurality of cleaning parts and bearing plates; the cleaning parts are arranged corresponding to the openings andare suitable for entering the openings to be contacted with the wind wheel; the driving device comprises a power device and a bracket; the power device is fixedly connected with the outer side wall ofthe spiral case; the bracket is fixedly connected with the bearing plate; and the power device drives the bearing plate to move close to or far away from the direction of the wind wheel. According tothe range hood, the wind wheel is subjected to scouring treatment by a plurality of cleaning parts on the cleaning brush and the same wind wheel part can be cleaned repeatedly for many times, so thatoil dirt is removed cleanly; and through control on the positive and negative rotation of the wind wheel, the range hood can perform double-sided cleaning on the wind wheel, so cleaning is more efficient, the defect that the oil dirt is remained on an impeller after self-cleaning is overcome, the service life of the range hood is prolonged and the use effect of the range hood is improved.