The utility model relates to a single -phase and high -voltage switch of single -phase hydraulic operating mechanism and high -voltage switch, single -phase hydraulic operating mechanism includes the pneumatic cylinder, the pumping system that pole chamber and nos pole chamber communicate that has with the pneumatic cylinder, a controller, a detection device for detecting the displacement signal of the piston rod of pneumatic cylinder and/or have the pressure signal of pole chamber and the oil pressure in no pole chamber, the controller is connected with the detection device sampling, the controller is connected with pump system control and is used for adjusting its flow, oil pressure signal and/or displacement signal transfer in time give the controller, the controller carries out the analysis and compares the processing these signals, the feedback regulation pumping system is adjusted the velocity of movement of piston rod with the flow that changes in the oil circuit again, each single -phase hydraulic operating mechanism all has independent controller to control, guarantee the synchronism of the single -phase divide -shut brake of three high -voltage switch.