By utilizing the principle that UVC ultraviolet rays can damage and alter the DNA of microorganisms, causing them to die immediately or unable to reproduce, combined with the catalytic and oxidizing functions of nickel-titanium photocatalytic materials, the purpose of sterilization, disinfection and odor removal can be achieved. It can effectively remove organic pollutants (TVOC, formaldehyde, benzene series, etc.) from the air circulated through it, and efficiently eliminate odors and unpleasant smells generated by chemical organic substances, human activities, pets, and microorganisms. The nano light hydrogen ion air purifier mainly utilizes a wide-band photon wave generator with a wavelength of 100-300um and a photocatalytic medium made of special polymer materials to produce ions, low-concentration oxygen ions, hydrogen peroxide, hydroxyl radicals, and a large number of negative ions. It can effectively kill bacteria and viruses in the environment, decompose organic volatile substances in the air, and make the environmental air clean and fresh. The CR nano light hydrogen ion purification technology has a thorough killing and removal effect on bacteria, viruses, harmful substances and odors in the air. It has low wind resistance, low power consumption, and is particularly suitable for installation in air return vents of air conditioning systems, combined air conditioning boxes, and ducts.