Abstract: The photovoltaic pilot work in the whole county involves a large number of rural distribution network stations. The selection and installation capacity of distributed photovoltaic access stations will affect the power supply structure and load supply structure of distribution network stations, as well as the distribution operation characteristics, line losses and photovoltaic power generation income. In order to effectively promote the photovoltaic pilot work in the whole county and achieve the highest return of distributed photovoltaic installation and operation under the condition that the operation of rural distribution network meets a high standard, this paper proposes the optimal installation target platform area and distribution of distributed photovoltaic project by analyzing the load level and load time distribution characteristics of rural distribution network. Based on the grid electricity and load rate data of the target station area distribution during the photovoltaic effective generation time, according to the data set of the maximum load month, combined with the local absorption income of distributed photovoltaic power generation and the integrated operating cost converted to daily after installation, a method was proposed to determine the optimal distributed installation capacity of the station area after comparing the expected income.