Air purifier

The utility model discloses an air purifier. The air purifier comprises a shell, a fan, a plasma generator, a humidification device, a heating device, a liquid crystal display screen, a temperature and humidity sensor, a control panel, a first filter layer, a diversion layer, an ultraviolet lamp and a second filter layer, wherein the first filter layer, the diversion layer, the ultraviolet lamp and the second filter layer are arranged in sequence. The ultraviolet lamp is arranged on one side of the diversion layer; a dust removal chamber, an ion purification chamber, a temperature and humidity adjustment chamber and a control chamber are formed in the shell and communicated with one another, an air inlet is formed in one side face of the dust removal chamber, and an air outlet is formed in the top of the temperature and humidity adjustment chamber; the plasma generator is arranged in the ion purification chamber, the fan is arranged at the connection position of the ion purification chamber and the temperature and humidity adjustment chamber, the humidification device, the heating device and the temperature and humidity sensor are arranged in the temperature and humidity adjustment chamber, the control panel is arranged in the control chamber, and the liquid crystal display screen is fixed outside the shell and electrically connected with the control panel. The air purifier can adjust the temperature and humidity of indoor air, remove PM2.5, decompose hazardous substances and keep the indoor air clean.