With the gradual popularization of safety appraisal of sluice projects in recent years，the problem of metal structure diseases and dangers，such as hydraulic steel gates，which directly affects the economic and social benefits of the hub，has attracted much attention.In this paper，taking the intake gate of Gaoqiao hydropower station in Jiangxi province as an example，based on the operation of the gate and the full investigation of the cost performance of various reinforcement methods，the feasibility of the reinforcement treatment of the bonded steel reinforcement technology is studied，and the reliability of the scheme is verified by theoretical method and numerical simulation.The calculation results show that the strength and stiffness of the reinforced gate meet the requirements of the code，and there are no abnormal conditions in operation so far.The research results provide a reliable reference value for the comparison and selection of reinforcement schemes for similar hydraulic steel gates with insufficient stiffness.