Abstract: The performance of water hydraulic control valves driven by traditional electromechanical converters is much lower than that of oil hydraulic control valves for the reason of poor seal, lubrication and large nonlinear force on the valve core.The voice coil motor is a novel actuator with small size, fast response, high precision and large output force and displacement.The performance improvement could be obtained by applying voice coil motor in the position control of valve core movement.Therefore, a novel water hydraulic throttle valve with direct voice coil motor actuation was developed.Based on the modeling of the voice coil motor and the water hydraulic ball seat valve, the simulation analysis was carried out in AMESim software.Meanwhile, the test rig for the performance of the developed valve was set up in our laboratory.The results of the static experiments and simulation show that the valve has good linearity, the large range of flow control and high control precision.The developed water hydraulic throttle valve with direct voice coil motor actuation can undoubtedly satisfy the requirements of high precision control in water hydraulic systems.