Abstract: Under the current situation that the load types and capacity of distribution network are also increasing, in order to solve the problem of serious low-voltage problem of distribution network in remote areas, and the lack of targeted and fundamental analysis methods and treatment measures, this paper proposes a low-voltage treatment method of distribution network considering the load accumulation effect. Through on-site experimental testing and theoretical analysis, the essential causes of low voltage problems were analyzed, and the concepts of load accumulation effect and unit voltage discount rate were put forward. Based on this, the voltage control measures were put forward. The simulation results show that the control measures proposed based on this research method can effectively solve the problem of low voltage of distribution lines, and the voltage of the whole line can meet the requirements of power supply voltage deviations. The proposed research method can accurately formulate low-voltage control measures, with significant effect, and can save a lot of costs, which has practical guiding significance, and can be widely used in the improvement of power quality in distribution network.