Artificial-free aquatic breeding water changing net cage

The utility model discloses a manual-free aquatic breeding water changing net cage which comprises an outer frame, an inner frame is fixedly connected to the outer frame, a fixing rod is fixedly connected to the inner frame, the fixing rod is fixedly connected with the outer frame, a sliding seat is slidably connected to the interior of the inner frame, a clamping groove is formed in the sliding seat, and the clamping groove is fixedly connected with the inner frame. A clamping groove is formed in the inner frame, a clamping block is clamped in the clamping groove, a connecting block is fixedly connected to the clamping block, the connecting block is slidably connected with the sliding seat, a pull rod is fixedly connected to the connecting block, and a water changing pipe container is slidably connected to the inner frame. According to the utility model, two circles of micropore nano aeration pipes are respectively arranged inside and outside the circle close to the bottom of the inner frame of the net cage,