The invention discloses an alcohol waste pulse quick precipitator; a water supply chamber, a pulse region, a water distribution downcomer, a buffering plate and a sludge collecting region are sequentially arranged at the center part of a cylinder body from the top down, a water inlet pipe is connected to the side edge of the water supply chamber, a pulse deep is arranged inside the water supply chamber, a center siphon pipe extending to the pulse region is arranged below the pulse deep, the top of the pulse deep is in pipe connection with an extraction pipe and a siphonic damage pipe which are communicated with each other, and an exhaust pipe communicated with the pulse region is arranged inside the water supply room; the bottom of the pulse region is connected with the water distribution downcomer, a settling zone is arranged on the outer side of the water distribution downcomer, the buffering plate is arranged at the bottom of the water distribution downcomer, the sludge collecting region is arranged below the buffering plate, and a blow-off pipe is arranged at the bottom of the sludge collecting region; and a water outlet slot, a water outlet header tank and a water outlet which are communicated with one another are arranged at the top of the cylinder body. The alcohol waste pulse quick precipitator provided by the invention has the advantages that the settling effect is excellent, the problem of solid-liquid separation of high-concentration alcohol sediment is solved, and the phenomenon of coking is avoided.