The utility model discloses an indoor
microorganism disinfection and purification
system which comprises a shell, the shell is provided with an air inlet and an air outlet, the shell is provided with a purification device, a disinfection device and a
centrifugal fan, and the purification device, the disinfection device and the
centrifugal fan are sequentially arranged in the
airflow direction; the disinfection device comprises a photocatalyst layer and a plurality of
ultraviolet lamp tubes, and the photocatalyst layer and the
ultraviolet lamp tubes are sequentially arranged in the direction from the air inlet to the air outlet. The disinfection device is composed of a photocatalyst layer and a plurality of
ultraviolet lamp tubes, under
ultraviolet irradiation, the photocatalyst layer can generate hydroxyl free radicals and
superoxide anion free radicals with strong oxidizing property, and the free radicals can be rapidly subjected to oxidation-reduction reaction with
bacteria, viruses,
formaldehyde and other harmful microorganisms and organic pollutants in the air, so that the disinfection effect is achieved. The
cell structure or molecular chain is destroyed and decomposed into harmless substances such as
carbon dioxide, water and the like, so that the purposes of disinfection and purification are achieved.