Hydroelectric valves are widely used in pipeline field. Centralized management of hydroelectric valves can be easily achieved by using wireless remote control which can decrease intensity of labor.An unmanned hydraulic system which could be wireless controlled by the internet was introduced. By installing remote module on PLC controller that connected in local area network and transferred data to the network server,mobile phone or computer could be used to get and change the data from the internet in order to wireless remote control the hydraulic system of hydroelectric valve. This system also could send alarm message to the staff by phone and SMS automatically for unattended operation.By the above way,prototype machine and experiment were made,by which every required function of the system was realized and it could be applied to the market.