The new round electricity system reform leads to changes in electricity supervisory environment. Further, the reform on electricity transmission and distribution price has new objective. Under such background, this paper establishes scientific and reasonable electricity transmission and distribution price calculation model, collects data and carries out electricity transmission and distribution pricing. Based on calculation results, this paper carries out parameter sensitivity analysis on electricity volume (uncertain regulatory parameters) and main regulating parameters, and gets sensitivity ranking of each pricing parameter of electricity transmission and distribution. Through study, the electricity transmission and distribution price calculation model and sensitivity analysis model for price influence factors under new electricity supervision are formed, providing ideas and opinions for electricity transmission and distribution price calculation.