Feces collecting device for aquaculture

The invention relates to the technical field of aquaculture, in particular to an aquaculture excrement collecting device which comprises an aquaculture water tank and an excrement recycling device. A guide hopper is arranged at the bottom of the aquaculture water tank; the excrement recycling device is arranged beside the breeding water tank, and the working end of the excrement recycling device is arranged in the breeding water tank; the excrement recycling device comprises a water tank separation device, a rotary cleaning device, an excrement separation device and a circulating sterilization device; the water tank separation device is fixedly mounted in the culture water tank; the rotary cleaning device is fixedly mounted in the culture water tank; the excrement separation device is arranged beside the culture water tank, and the input end of the excrement separation device is communicated with the guide hopper of the culture water tank; the circulating sterilization device is fixedly installed in the excre