A wind-light remote control hydraulic gate valve device for a land-area dredge and sludge discharge pipeline comprises a hydraulic gate valve, a hydraulic control part and a wind-light power generating device. The hydraulic control part can control the opening and closing of the hydraulic gate valve. The wind-light power generating device can absorb solar and wind energy and convert the solar and wind energy into electric energy serving as the control power source of the hydraulic control part. The wind-light power generating device is electrically connected with the hydraulic control part and located above the same. The wind-light remote control hydraulic gate valve device has the advantages that by the wind-light power generating device, the wind and light energy can be converted into the electric energy, and the opening and closing of the hydraulic gate valve can be controlled; the sludge pump of a working mother boat needs not to be stopped, low fault rate is achieved, the work efficiency and reliability of the hydraulic gate valve are increased, construction efficiency is increased, the wind and light energy can be fully utilized especially in dredge and hydraulic reclamation projects of coastal field operations, project geographic position advantages are well brought into play, and field adaptability is increased.