To provide a circulative hydraulic power generator capable of corresponding to a draught water flow and a disaster in any place by installing the circulative power generator and keeping water in a pipe once, switching from a controller if a hydraulic pressure is applied, although power supply is required when starting a pump first, and operating continuously by private power generation if a current is made to flow to correspond to various environment.

This circulative hydraulic power generator can perform circulation and correspond to any environment if various types of pipes are mutually connected, although various types of pipes are used. The power generator 2, a booster pump 3, a cooling system 4, a control equipment 5, and a wiring 6 are connected with and attached to the pipe 1.