The invention discloses a high-voltage uniform electric field filtration ultraviolet multiplication sterilization air purifier. According to the air purifier, two metal net-shaped disks serving as two electrodes and an insulation filtration disk clamped between the metal net-shaped disks from a uniform high-intensity electric field filter. The adsorption capacity of the uniform high-intensity electric field filter is high for PM2.5; the smaller airborne suspended particulates are, the higher the adsorption capacity of the uniform high-intensity electric field filter is; and large and small particulate matter can all be filtered by the uniform high-intensity electric field filter. Three ultraviolet lamps are uniformly installed in a cylinder with a high-reflectivity mirror, and three infrared lamps at the 60-degree interval with the ultraviolet lamps are uniformly installed. Reflection loss of ultraviolet rays on the high-reflectivity mirror is not larger than 10%. Through repeated reflection of the high-reflectivity mirror in the cylinder, N times multiplication effects are generated on the ultraviolet rays, and that is to say, the ultraviolet intensity is improved not by increasing the quantity of the ultraviolet lamps. The similar multiplication effects are also generated on the three infrared lamps, so that the purpose of air heating is achieved, and when a power source of the infrared lamps is turned off, heating is stopped. In conclusion, when entering the air purifier, air is filtered through a powerful uniform high-voltage electric field first and then subjected to sterilization through the strong ultraviolet rays, and thus the functions of both air purification and air heating are achieved.