Lifting type aquaculture net cage system and control method

The invention provides a lifting type aquaculture net cage system and a control method, and relates to the technical field of aquaculture. The net cage system comprises a net cage, an anchoring pile, a pile sleeve, a vertical supporting structure and buoyancy tanks; the net cage comprises a net cage body and a net cage shaft, the net cage shaft is connected with the pile sleeve, the anchoring pile is sleeved with the pile sleeve, and the pile sleeve is suitable for moving in the axial direction of the anchoring pile; the buoyancy tanks comprise the first buoyancy tank and the second buoyancy tank, the vertical supporting structure and the first buoyancy tank are arranged on the anchoring pile in a sleeving mode, the vertical supporting structure is located between the pile sleeve and the first buoyancy tank, and the second buoyancy tank is connected to the end, facing the net cage shaft, of the net cage body. According to the system, lifting of the net cage is controlled through floating or sinking of the fir