The invention relates to the technical field of ship tools, in particular to an efficient water feeding device for a ship. The efficient water feeding device comprises a frame for being connected with a sea valve box, and further comprises a front grating plate and a back grating plate which are connected with the two ends of the frame respectively. Triangle space is formed by the frame, the front grating plate and the back grating plate, a certain front inclination angle is formed between the front grating plate and the frame, a certain back inclination angle is formed between the back grating plate and the frame, and a water intercepting plate for catching water is further arranged at the connecting portion between the front grating plate and the back grating plate, and is located in the triangle space. By means of the efficient water feeding device, the water feeding efficiency of the sea valve box can be effectively improved, and particularly, when the ship is in the high-speed shipping state, whether the ship is in the advancing working condition or in the retrogressing working condition, efficient water feeding can be achieved, the water requirement of all devices and all systems of a water-draining-type high-speed ship is met, and it is guaranteed that the ship is in the airworthiness state; meanwhile, large sundries can be stopped from entering a seawater valve box, the preliminary filter effect is achieved, and the powerful guarantee is provided for the high shipping speed and the safety of the ship.