NOVELTY - Equipment comprises excrements falling transport portion including an excrements transmission plate having several transmission holes, excrements transportation unit, excrements storing portion, mixing chamber which is connected to the excrements storing portion, plant obtained by drying and pulverizing dried soil, plant, or chaff, fermenting chamber, methane gas gathering portion which gathers methane gas, and electricity producing device which produces electricity using methane gas.    USE - The equipment is useful for producing electricity and compost.    ADVANTAGE - The equipment provides large amount of electricity and high yield of compost.    DETAILED DESCRIPTION - Equipment comprises excrements falling transport portion including an excrements transmission plate having several transmission holes through pig excrements can be transmitted, bottom plate which is formed slantly at a specifically separated distance at lower of the excrements transmission plate, and an excrements transportation unit which transports the pig excrements passed from the excrements transmission plate, excrements storing portion which is connected to the bottom plate and in which the transported excrements are stored, mixing chamber which is connected to the excrements storing portion and in which pig excrements of the excrements storing portion is transported, plant obtained by drying and pulverizing dried soil, plant, or chaff or fermenting composition including chaff-pulverized powder which is added in order to promote fermentation, and mixed with pig excrements and the composition, fermenting chamber which is connected to the mixing chamber and in which the mixture of the pig excrements and the fermenting composition is transported and composted by fermentation, methane gas gathering portion which is connected to the excrements falling transport portion, the excrements storing portion, the mixing chamber, and the fermenting chamber and gathers methane gas, and an electricity producing device which produces electricity using methane gas gathered in the methane gas gathering portion and transmits heat generated in the previous process to the excrements falling transport portion and the fermenting chamber, where the excrements falling transport portion, the excrements storing portion, the mixing chamber, and the fermenting chamber are closed in order to prevent leakage of methane gas.