Provided is an environmental microbial agent combustion gas generator for removing bad smell of a stable. The generator combusts a microbial agent in a gas combustion chamber into which the microbial agent of a dust type is provided, and distributes the generated gas into the atmosphere of the stable such that the microbial agent of a dust type may be easily diluted with the atmosphere of the stable. According to an environmental microbial agent combustion gas generator of the related art, a duct and a transfer passage are required to supply the microbial agent of a liquid of dust type. However, the structure of the environmental microbial agent combustion gas generator according to the present invention has a simple structure. The environmental microbial agent combustion gas generator includes a main body (10) having a box shape and provided in the stable (H), wherein the main body (10) is provided on an upper surface thereof with a gas discharge duct (11) and on one side surface thereof with a combustion dust discharge hole (12), a gas combustion chamber (20) having a circular shape and provided at an inside thereof with a heating bar (22) for heating and burning microbial agent input through a combustion dust discharge hoper (21), and a supply unit (30) for supplying the microbial agent through an agent supply main body (32) connected to the gas combustion chamber (20).COPYRIGHT KIPO 2016본 발명에 따른 축사 악취제거용 친환경 미생물제제 연소가스발생장치는 분진타입의 미생물제제를 공급받는 가스연소통의 내부에서 미생물제제를 연소하는 것으로 가스를 발생시켜 축사의 내부 대기중으로 분산시키는 연소가스발생장치를 구비하여 분진타입의 미생물제제를 축사의 내부 대기 중으로 용이하게 희석시킬 수 있어 기존 액상타입 또는 분진타입의 미생물제제를 공급하기 위한 덕트 및 이동통로의 제작이 불가피하고 축사 악취제거용 연소가스발생장치의 구조를 간소화하는 효과가 있다.