The utility model discloses a large-scale round water-saving aquaculture FRP (Fiber Reinforced Plastic) pond. The large-scale round water-saving aquaculture FRP pond comprises an FRP pond body, a pond bottom, a water inlet pipe and a water outlet pipe, wherein the FRP pond body is a round pond body formed by combining a combination piece flange, a screw and an adhesive tape in a sealing way, the pond bottom is conical, is poured by concrete and is connected with the FRP pond body in the sealing way, the center of the pond bottom is provided with a water overflow pipe, the water overflow pipe is provided with an inner pipe and an outer pipe, multiple tooth-shaped water overflow holes are formed in a connecting position of the outer pipe of the water overflow pipe and the pond bottom, the outer pipe of the water overflow pipe is arranged at the outer part of the inner pipe of the water overflow pipe in a sleeving way, the inner pipe of the water overflow pipe is inserted in the center of the pond bottom in the sealing way and is connected with the water outlet pipe, the water inlet pipe is horizontally arranged on an upper opening of the pond body, the water inlet pipe is provided with multiple water spray holes, water columns sprayed out by the water spray holes are in 40-degree angles with the water surface in the pond and are obliquely sprayed to the water surface in the pond, the water in the pond can flow as being oxygenated, the water level in the pond is higher than the upper opening of the inner pipe of the water overflow pipe at the center of the pond, sewage and residual slag which are deposited to the pond bottom can be discharged to a filter settling pond through the tooth-shaped water overflow holes, the outer pipe and the inner pipe of the water overflow pipe and the water outlet pipe, and settled clean water can be recycled and reutilized. The large-scale round water-saving aquaculture FRP pond disclosed by the utility model has the beneficial effects that the occupied space is small, the water is recycled, water saving, oxygenating, filtering, high density and industrialization are realized, a large-scale aquaculture device technology is adopted, labor and time are saved, the effect is good, the benefit is high, and the large-scale round water-saving aquaculture FRP pond is scientific and practical and is suitable for being popularized and used for large-scale and medium-scale aquaculture.