The invention relates to a method for lowering network loss of a power distribution network and improving system voltage, in particular to a method for lowering network loss of a power distribution network and improving system voltage through utilizing distributed wind power generation. The method comprises mounting a wind-driven generator group which generates electricity by radiated wind or a wind-driven generator group comprehensive device with reactive-load adjusting capacity on the tail end of a power distribution network load whose wind-energy resource is rich, reducing the transmission power of a power transmission system, directly supplying electricity to load, effectively lowering the network loss of a system without passing through a long power transmission line and a power distribution line, simultaneously improving the voltage of systems in some extent since the reactive-load regulating capacity of the wind-driven generator group or the comprehensive device, and meanwhile, the distributed wind power generation can make full use of wind-power resource. The method has the advantages of little investment, short recovery period and the like, which plays the function of saving energy of a power distribution network when the regenerative wind-power resource is utilized.