In order to reduce the building cost of hydraulic valve remote control system in VLCC and hydraulic oil leakage, improve the engineering quality and convenience for use and maintenance, the detail analysis and investigation of design and construction for the hydraulic valve remote control system is conducted in an actual built 300 000 t VLCC. The used amount of substance for hydraulic oil tubes and ferrule penetration pieces and other accessories in some construction area on board is collected. An optimized solution is provided based on the layout of solenoid valve box and hydraulic power unit station. After corresponding revision, the hydraulic oil tubes with total length about 1 827.84 meters and 204 pieces of ferrule penetration and other accessories could be saved. The optimization method provides a feasible plan for enterprises to improve construction quality and to achieve cost reducing and efficiency increasing.