Introduction   Aiming at the problems of relatively single perspective， inadequate quantitative and global analysis of existing research on hydropower absorption， this paper systematically studies the measures of Yunnan's surplus hydropower absorption， quantitatively analyses the situation of water releasing in the southern region in the future.

  Method  This paper put forward the direction of Yunnan's surplus hydropower absorption， and defined the transmission capacity and margin of the west-to-east power transmission channel on this basis.

  Result  Based on the principle of overall coordination， this paper purposefully puts forward two kinds of clean hydropower absorption measures， which are optimal utilization of existing channels and improvement of transmission capacity of Guangdong and Guangxi section.

  Conclusion  This is the first time to achieve the coordination and unification of planning and dispatching operation links， and further improve the utilization efficiency and transmission benefit of the west-to-east power transmission in southern region.