Air sterilizer used in hospital laboratory

The invention discloses an air sterilizer used in a hospital laboratory. The air sterilizer comprises a box body, wherein an ultraviolet sterilizing device and a drying device are arranged in the boxbody, the ultraviolet sterilizing device comprises a first inner box body, a plurality of first partition plates are horizontally arranged in the first inner box body, a fan is arranged at the inner bottom of the first inner box body, and ultraviolet lamps are arranged between any two first partition plates and between the uppermost first partition plate and the top wall of the first inner box body. An air outlet hole is formed in the top wall or the side wall of the top end of the first inner box body, an air outlet pipe is arranged at the air outlet hole, the upper end of the air outlet pipeis connected with one end of a tee joint, the other two ends of the tee joint are respectively connected with a first air pipe and a second air pipe, and the second air pipe is communicated with an air inlet of the drying device. The ultraviolet sterilization device and the drying device are arranged so that the air in the hospital laboratory be disinfected and sterilized, the air in the hospitallaboratory can also be dried.