The invention discloses an air purification device. The air purification device comprises a tank body, wherein an air suction pipe is communicated to the top of one side of the tank body, a purification tank is fixedly connected to the bottom of one side of the inner wall of the tank body, an air inlet pipe is communicated to the bottom end of the air suction pipe, the bottom end of the air inletpipe penetrates through the top of the purification tank and extends into the purification tank, and a filter bucket penetrates through one side of the top of the purification tank. The invention relates to the technical field of air purification. According to the air purification device, the air suction pipe is communicated to the top of one side of the tank body, and the purification tank is fixedly connected to the bottom of one side of the inner wall of the tank body, so that the purification quality is greatly improved, the body health is guaranteed by virtue of fresh air, and the body health and safety are guaranteed; and the purification tank is fixedly connected to the bottom of one side of the inner wall of the tank body, and the air inlet pipe is communicated to the bottom end ofthe air suction pipe, so that the electric power is saved, the high purification efficiency is realized, and the energy conservation and environment protection effects of the air purification deviceare achieved.