The invention relates to a convenient range hood. The convenient range hood mainly comprises a body and a hanging device; the body is composed of three layers of aluminum alloy frames; the hanging device is composed of a hanging rod, a hanging seat and a plurality of layers of round frames, and the multiple layers of round frames are fixedly connected through a fixing belt; and an oil fume inner cavity, a storage battery, a mounting base, a fan and a filtering system are sequentially arranged in the body from top to bottom. A smoke suction port is formed in the top of the first layer of aluminum alloy frame of the body, and an exhaust port is formed in the bottom of the third layer of aluminum alloy frame. The diameters of the round frames of the hanging device are sequentially reduced from top to bottom, and the upper-lower distances can be different. The mounting base is composed of an upper cover and a base, the oil fume inner cavity is formed in the top of the upper cover, and the storage battery is arranged at the top of the base and is positioned between the upper cover and the base. The filtering system comprises a particulate air filtering layer, an activated carbon filtering layer, a primary filtering layer and a metal filtering layer. The convenient range hood is convenient and fast to use and operate and can be hung for use or horizontally placed on a table board for use. In addition, the multi-stage filtering system efficiently purifies air.