PURPOSE: A high efficiency odor discharge system of livestock excretion composting facilities is provided to decompose odor gas by using microbes included in ferment of a third fermenting bath. CONSTITUTION: A high efficiency odor discharge system of livestock excretion composting facilities comprises a first fermenter, a second fermenter(6), and a third fermenter(7). A plurality of collecting hoods(50) are installed to be adjacent to the top of the first fermenter. The collecting hoods collect ordor generated from the whole upper area of the first fermenter. The collecting hood is connected to a suction pipe(10) and absorbs odor exhausted to the upper part of the first fermenter.
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