Abstract: This paper proposed a two-level coordinated optimal allocation model of regional power system considering carbon emission constraints and uncertainty. The upper layer of the model optimized the configuration capacity of various power units and energy storage equipment with the objective of minimizing the system planning cost. The lower level operation optimization model took the minimization of carbon emissions of the system as the objective. The model used the fuzzy random chance constraint method to deal with the uncertainty factors on both sides of the source and load,so as to optimize the output of power,energy storage and demand side resources. The results show that the coordinated planning of power system with comprehensive consideration of flexible resources can effectively reduce the carbon emission,and can take into account the economy and environmental protection of power system planning.