Ceiling-mounted air sterilizer

The utility model relates to the technical field of air disinfectors and discloses a ceiling-mounted air disinfector which comprises a bottom plate, a sterilizing mechanism is fixedly mounted at the top of the bottom plate, and a filtering mechanism is fixedly mounted at the bottom of the bottom plate. The sterilization mechanism comprises a mounting plate, the mounting plate is fixedly mounted at the top of the bottom plate, bolts are fixedly mounted at the top of the mounting plate, a suction fan is fixedly mounted at the bottom of the mounting plate through bolts, an air flow breaking sheet is fixedly mounted at the bottom of the suction fan through bolts, and a mounting ring is fixedly mounted at the top of the mounting plate through bolts; a top plate is fixedly mounted at the top of the mounting ring through bolts, a titanium dioxide catalysis plate is fixedly mounted in the middle of the bottom of the top plate, and high-reflection mirror metal plates are fixedly mounted on the top plate and close to t