PROBLEM TO BE SOLVED: To provide an air sterilizing apparatus having improved usability which saves time and effort of a user to supply water, and allows to use a gas-liquid contact member for a long time and facilitates maintenance of the apparatus by reducing attaching of scales.SOLUTION: The air sterilizing apparatus includes a water storage tank 42 for storing circulation water, an electrolyzer 46 for electrolyzing the circulation water stored in the water storage tank and generating electrolytic water containing active oxygen species, a gas-liquid contact member 53 to which the electrolytic water generated by the electrolyzer 46 is supplied, an air blowing fan 31 for sending air to the gas-liquid contact member 53, and an electrolytic water collecting device 42A which collects and returns the electrolytic water in the gas-liquid contact member 53 to the water storage tank. The air sterilization apparatus sterilizes air by contacting air and electrolytic water containing active oxygen species at the gas-liquid contact member 53. The circulation water stored in the water storage tank 42 contains lithium chloride that works as a liquid moisture absorbent.
