The invention provides an extractor hood preventing water remaining. A shell, a smoke discharging pipeline, a draught fan, an air blowing pipeline and a controller are included. When cooking is performed, the controller controls the draught fan to rotate forwards, so that air circulation to the outdoor environment is generated in the smoke discharging pipeline, and lampblack generated by cookwareis absorbed. After the cookware is cleaned, the controller firstly controls an electric louver to be closed, and a smoke absorbing opening is blocked. Then the draught fan is controlled to rotate reversely, so that air circulation to the indoor environment is generated in the smoke discharging pipeline, and air passes through the air blowing pipeline, air flow is blown and fed to the cookware froman air blowing opening, and evaporation of remaining water in the cookware is accelerated. According to the extractor hood preventing water remaining, due to the fact that the air blowing pipeline communicating with the smoke discharging pipeline is additionally arranged, and reverse rotating of the draught fan is utilized, the extractor hood can blow and feed airflow to the cookware, the remaining water on the cookware is fast evaporated, the cookware is kept dry, and therefore it is avoided that due to the remaining water, the cookware is rusted, and the problem that after cleaning of traditional cookware, the water remains, and the cookware is likely to be rusted is solved.