Abstract: An air purification device includes a housing, a purification dust collection structure, an ultraviolet lamp, and a harmful substance removal structure. The housing is provided with an air inlet and an air outlet, with an air supply channel formed between the air inlet and the air outlet. The purification dust collection structure is located in the air supply channel. The ultraviolet lamp is arranged in the air supply channel and configured to at least oxidize and decompose volatile compounds in air entering the air supply channel. The harmful substance removal structure is arranged in the air supply channel and configured to at least remove harmful substances generated during operation of the ultraviolet lamp.