Air purifier capable of automatically removing dust

The invention relates to an air purifier capable of automatically removing dust. The air purifier capable of automatically removing the dust comprises a purifier set and a purifier shell, wherein the purifier set is installed inside the purifier shell, and a filter screen is arranged on the purifier shell; a dust removing device is arranged on the filter screen; the dust removing device comprises a drive mechanism, a dust suction nozzle, a dust guide pipe and a dust collection box; the drive mechanism comprises a sliding drive mechanism and a dust suction drive mechanism; a nozzle mouth of the dust suction nozzle faces the filter screen, the two ends of the dust suction nozzle are sleeved with a guide rail on the purifier shell in a sliding mode, and the dust suction nozzle is connected with the sliding drive mechanism; the dust collection box is arranged on the purifier shell, the dust guide pipe is arranged between one end of the dust collection box and the dust suction nozzle in a communicating mode, and the dust suction drive mechanism is arranged at the other end of the dust collection box. The air purifier capable of automatically removing the dust is novel and unique in structure and convenient to install and use; as automatic identification dust removal is conducted on the filter screen, the problem that a filter screen of an existing air purifier in the market is cleaned manually is effectively solved; meanwhile, loads of a motor are reduced through dust removal, and the service life of sterilization parts of the air purifier is prolonged.