The invention discloses a treatment system and method of bubbling type ultraviolet/Fenton oxidized organic waste gas. The treatment system comprises an oxidization reaction chamber, an air blower and a hydrogen peroxide feeding device, wherein a Fenton reagent solution is stored in the oxidization reaction chamber; an exhaust hole is formed in the top of the oxidization reaction chamber, a hydrogen peroxide inlet is formed in the upper part of the oxidization reaction chamber and a gas inlet is formed in the lower part of the oxidization reaction chamber; the air blower is connected with the gas inlet through a waste gas pipeline; the hydrogen peroxide feeding device is connected with the hydrogen peroxide inlet; a plurality of ultraviolet lamp tubes are vertically arranged at the upper end of an inner cavity of the oxidization reaction chamber; the lower ends of the ultraviolet lamp tubes are inserted into the Fenton reagent solution; a disc type aerator is arranged at the bottom end of the oxidization reaction chamber; the gas inlet is connected with the disc type aerator through a gas inlet pipe. The treatment system and method of the bubbling type ultraviolet/Fenton oxidized organic waste gas have the advantages of simplicity in operation, low energy consumption and high efficiency; Fe<2+> in a Fenton reagent can be circularly utilized and the utilization rate of H2O2 is also improved.