The invention is a thyristor valve group water feeding and distributing pipeline system for static reactive power compensator, where the valve group is divided into three phases, and the pipeline adopts a parallel connecting mode, and the flow of the three phases are balanced; the devices in the valve group are arranged and combined in grouped crimping form, the valve-group water feeding and distributing hose adopts a mode of connecting in series or in parallel. The invention arranges a water-distributing mother pipe as a water distributor, arranges flow choking element in the water distributing hose, arranges proper slope and auto gas exhaust valve on the pipeline, and arranges equipotential column at special design point of the insulating pipeline. The sealing ring has multiple sealing water veins, the sealing water veins closely fits the sealing surface of the flange to achieve multiple sealing protection effects. The system has reasonable structure, uniform flow distribution, equipotential pipeline design, and multiple measures for assuring sealing of cooling medium and automatic gas exhaust.