Flowing water breeding system capable of improving feeding efficiency of fishes

A flowing water breeding system capable of improving the feeding efficiency of fishes comprises a breeding net cage, a bait feeding machine and a simple house, wherein the bait feeding machine is matched with the breeding net cage; fish feed bags and daily fishing gears are placed in the simple house; the breeding net cage comprises a cage body, a floater, a sinker and a pull cable; the floater has a suspension effect; the sinker and the pull cable have a straightening and fixing effect on the cage body; the cage body comprises a nylon net and a metal frame which is fixedly connected to a topopening of the nylon net; a metal net is further arranged between an inner net and an outer net of the nylon net; the inner wall of the inner net is detachably connected with a circle of nylon fine net through a plurality of hanging buckles; the upper section of the circle of nylon fine net is exposed out of the water surface; and the lower section of the nylon fine net is soaked in the water surface. By the design of the