The utility model discloses a processing apparatus of aquaculture waste water, including waters pond, the breed pond of setting in the pond of waters, be equipped with water inlet and delivery port on breeding the pond, be equipped with in the breed pond and precipitate the region, be equipped with in the pond of waters make the water from the water inlet of breeding the pond towards the driving piece that the delivery port flows, still be equipped with the deflector in the pond of waters, precipitate regional the setting and be close to the position of delivery port breeding the pond, it is lower than the bottom surface of breeding the pond to precipitate regional bottom surface, the settling zone intra -area is equipped with precipitating the precipitate exhaust blowdown subassembly on the regional bottom surface. Adopt above -mentioned scheme, can in time handle the precipitate of settling zone intra -area, and can not cause the processing apparatus of aquaculture waste water of injury to the aquatic products of breeding.