The Cierra is a portable range hood that combines oil fume purification with air purification. Includes a powerful fan and replaceable front oil fume filter and rear air filter cotton. The front and rear grills are quickly removable to facilitate filter system replacement, and the powerful fan and filter system are ideal for daily users who desire to produce less oil fume in the kitchen. It is smaller than the existing ventilator, making it convenient for users to carry, and is suitable for outdoor barbecue and stir-fried dishes. Adjusts flexibility and angles, and accurately filters out oil smoke to reduce indoor oil fumes and outdoor pollutant emissions. A sleek design of the body, clean floating air inlet and oil pollution-resistant coating make it convenient for daily cleaning and maintenance of the user. It can be rotatably stored, reducing the space occupied in the living room, and can also be used as an indoor air purifier through air filters and low wind speeds, and a sophisticated grill adds details to the design.