The invention discloses a high-precision forklift hydraulic steering system which comprises a steering wheel, a hydraulic steering gear, a hydraulic pump, a steering cylinder and a hand wheel, wherein the steering wheel is fixedly connected with the hydraulic steering gear; and a piston rod of the steering cylinder is connected with the hand wheel. The high-precision forklift hydraulic steering system is characterized in that a hand wheel corner feedback compensation control system is arranged in the hydraulic power steering system. The high-precision forklift hydraulic steering system has the advantages that steering wheel corner information and hand wheel corner information are processed through a steering compensation controller and the steering cylinder is subjected to oil-liquid compensation through an electromagnetic reversing valve because the hand wheel corner feedback compensation control system is arranged in the hydraulic power steering system; steering closed loop control is achieved, so that the corner of the steering plate accurately corresponds to the corner of the hand wheel; the steering precision of the forklift steering system is improved; the accuracy of the steering position of the steering wheel is also guaranteed, and the steering operation of a forklift is more energy-saving and more sensitive at the same time.