Abstract: West-to-east power transmission is of strategic significance for speeding up China’s energy structure adjustment and promoting the economic development and optimal allocation of resources of the western regions. Along with the gradual rise of the power price level, the problems of west-to-east power transmission are getting prominent. A study is made on the pricing mechanism of west-to-east power transmission during the “13th Five-Year” priod (2016-2020) in terms of stock and increment. A two-part transmission pricing mechanism of the incremental part is proposed based on the hierarchical power transmission curve, and the ratio between of the electrical capacity charge and power charge is determined, and the electrical capacity charge is apportioned with peak-load electricity capacity ratio method. An analysis is made on the impact of the two-part transmission pricing mechanism on the interests of power feeding and receiving ends as well as transmission companies. And the interests of the shareholders are also discussed respectively under guarantee curve, protocol curve and super delivery curve. It is concluded that the proposed two-part transmission pricing mechanism under the hierarchical electricity curve can stabilize the income level of transmission companies, and encourage the enthusiasm of both the feeding-end and the receiving-end respectively for increasing the generation capacity and receiving the western power. The proposed idea can be an important reference for solving the west-to-east power transmission pricing problems.