The invention provides novel improvement of a range hood and a control method and device for the range hood. The range hood provided by the invention comprises a motor and an impeller driven by the motor and further comprises an extreme mode selecting device, and the extreme mode selecting device stores control commands corresponding to the motor when the value of air volume reaches or is the nearest to a preset lower limit air volume threshold value under different working conditions. The extreme mode selecting device is further used for determining user working conditions, selecting the stored control commands corresponding to the motor when the value of air volume reaches or is the nearest to the preset lower limit air volume threshold value under the user working conditions and storing and/or operating the selected control commands. By means of the technical scheme, the range hood can be controlled on the basis of the user working conditions.