The invention relates to the technical field of pressure reducing valves, and discloses a multifunctional pressure reducing valve suitable for high flow. The multifunctional pressure reducing valve suitable for high flow comprises a pressure reducing valve and a pipe generator; the pipe generator is arranged in front of a valve body of the pressure reducing valve; the pipe generator comprises a radial water turbine and a generator; the generator is connected with the radial water turbine; the radial water turbine comprises an upper machine box, a lower machine box and a turbine module; the lower machine box is provided with a water inlet and a water outlet; the turbine module penetrates through the upper machine box and the lower machine box; the turbine module comprises a radial turbine and a turbine shaft; the radial turbine is arranged in the lower machine box; the turbine shaft is connected with the radial turbine and the generator; and water currents enter from the water inlet ofthe lower machine box, penetrate through the turbine module, flow out from the water outlet of the lower machine box, and enter the valve body of the pressure reducing valve.