PURPOSE: A gaseous hydrogen sulfide processing apparatus is provided to easily process sulfur dioxide converted and flowed into a reactor with gaseous hydrogen sulfide, by installing a scrubber for a sulfur dioxide process. CONSTITUTION: A gaseous hydrogen sulfide processing apparatus comprises a reactor main body(10), a discharge electrode(40), an outer electrode(60), a connecting part(70), a power supply unit(80), at least one carrier, and a heat resistance supporting unit(20). The reactor main body comprises an accommodating chamber, a gas inlet(11), and a gas outlet and is composed of dielectric materials. The discharge electrode is adapted to the accommodating chamber and is partially connected to the inner side of the reactor main body. The outer electrode touches the exterior of the reactor main body. The connecting part is connected to the outer electrode. The power supply unit supplies power to the discharge electrode. The carrier is accommodated in the accommodating chamber and is selected from aluminum oxide or zeolite with at least one catalyst of the selected silver, copper, or manganese. The heat resistance supporting unit is formed at each of the gas inlet side and the gas outlet side of the accommodating chamber to close the accommodating chamber. The heat resistance supporting unit comprises a penetration hole with a diameter for passing gas but not the carrier. For the after treatment, a sulfur dioxide type scrubber is additionally included on the rear end of the reactor main body.