The plate valve is being used more and more in the medium & high-head ship lock and broke out the usual application range several times,with satisfactory effect achieved.In view of the main technical problems encountered in the application of the plate valve in medium & high-head ship lock in China,and based on the achievements in the design,research and project application in recent years,we analyze the progress on the technical problems of cavitation,flow induced vibration and hydrodynamic hoisting of the plate valve.The results show that by taking the comprehensive measures such as the natural ventilation,the narrow gate groove and the reasonable bottom edge type of the valve well,we can solve the problem of cavitation of the valve section.The double-panel structure greatly improves the overall stiffness of the valve,reduces the vibration response of the valve structure,and effectively improves the stress state of the valve.