The invention discloses a closed-core load balanced type full hydraulic steering gear which comprises an oil inlet P1, an oil returning opening T1, a left operating oil opening L1 and a right operating oil opening R1. Damping hole channels are reserved at the left operating oil opening L1 and the right operating oil opening R1. When the steering gear is in the middle, the damping hole channels are communicated with the oil inlet P1 or the oil returning opening T1. The steering gear has the advantages that oil pressure of the operating oil openings at load ends reaches balance when the steering gear stops rotating, turning is stopped in time, flexibility and reliability of the steering gear are enhanced evidently, shaking of a vehicle is eliminated when the turning is stopped, impact is reduced and comfort and safety of the vehicle are enhanced.