The invention discloses ultraviolet ray photodecomposition deodorizing equipment, which comprises a shell and a honeycomb nanometer photocatalytic module, wherein the shell has a wind channel, the honeycomb nanometer photocatalytic module is arranged in the wind channel, and comprises a plurality of base plates, the plurality of the base plates are arranged along the gas flow direction of the windchannel at intervals, the base plates are respectively provided with honeycomb holes for passing through of gas flow, the outer surfaces of each base plate are respectively coated with a photocatalyst layer, and high-power ozone-free ultraviolet ray lamp tubes are arranged between the adjacent two base plates, such that the high-power ozone-free ultraviolet ray lamp tubes of the honeycomb nanometer photocatalytic module irradiate on the photocatalyst layers of the base plates so as to effectively decompose and sterilize organic matters in waste gas. According to the present invention, the ultraviolet ray photodecomposition deodorizing equipment can provide good photocatalytic effect, has ideal disinfection and sterilization effect on waste gas, can completely treat and purify waste gas, has advantages of simple structure and low operation cost, and is worthy of being marketed, wherein the treated air completely meets the discharge standard.