The invention discloses a high-efficiency purification range hood, and belongs to a specific rang hood for households, particularly for restaurants. The range hood also comprises a hood head, a flue header, a water tank and the like, generally uses a motor to save a pump motor, and adopts a vertical porous axle tube for water inlet and a multi-layer multi-section concentric mesh cylinder for dispersion and refining to obtain high-density super capacity centrifugal cleaning liquid drops, so that rising oil smoke is subjected to timely and effective full automatic cleaning, recycling and heat extraction in the maximum amplitude; and a conical underpan at the lower end of the range hood ensures residual water never to leak downwards, a cavity of a clean flue is free of cleaning permanently, and the range hood eliminates fire potential of oil accumulated stains permanently, saves a huge amount of expenditure and troubles for cleaning all the year round, can purify temperature reducing air for nearby direct discharging to save a huge amount of highrise pipeline expenditure all the year round and windage electricity consumption, reduces room temperature of a back kitchen, improves the working conditions of chefs, generates free hot water and recycles waste oil all the year round, has great general effect on energy conservation and emission reduction, low cost, easy implementation and comprehensive effect, is radical important breakthrough for conventional hazard of oil smoke pollution of national restaurant cooking, and is required urgently by the nation mainly.