The low terminal voltage of distribution network is the bottleneck which affects the quality of power supply in local area. First, taking the radial distribution network as an example, this paper analyzes the reasons of low voltage at the end of the distribution line, points out that the low terminal voltage of distribution line is not entirely caused by the lack of reactive power, the transmission active power also leads to terminal voltage drop. Then, combined with the characteristics of wind energy resources in Jilin Province, a scheme is proposed which can raise the voltage at the end of the distribution line based on the distributed wind turbines. The main idea of this scheme concentrates the wind turbines output to the booster station, and then raises the voltage to 66 kV and connects to the middle section of the high voltage distribution line, which can effectively improve the terminal voltage of the distribution lines. The scheme is of practical value and can preferably improve power supply capacity of low-voltage distribution system, which is verified by a demonstration project of a wind plant in Jilin province.