The breeding device capable of improving the fry survival rate comprises an outer water tank, an inner water tank, a water outlet pipeline, a water inlet device and a circulating device, a circle of water outlet holes are formed in the position, close to an opening of the inner water tank, of the top of the side wall of the inner water tank, and a backflow cavity is formed between the inner watertank and the outer water tank; the water inlet device is arranged at the top of the inner water tank, a fixed sleeve is arranged at a water outlet of the inner water tank, the fixed sleeve is vertically arranged at the bottom of the water tank, a water outlet is formed in the wall of the fixed sleeve, a filter screen is arranged on the outer side of the fixed sleeve, and a water level control pipeis arranged in the fixed sleeve; and a water outlet of the water outlet pipeline is connected into the circulating device through a drainage pipeline, a water oxygen detector is installed at the topof the inner water tank, aerators are installed on the inner side walls of the inner water tank, and an alarm and a controller are arranged on the outer side wall of the outer water tank. The method has the advantage of improving the fry survival rate.