Abstract: Slowing down global warming and reducing carbon dioxide emissions become urgent problems in the energy sector. Therefore, the optimization of regional integrated energy system has become an important way to achieve the goal of energy conservation and emission reduction. However, complex interest interaction and incomplete market information exist among energy hubs in the regional integrated energy system and this brings great difficulties and influences to the operation regulation of the system. To solve this problem, how to realize the restriction and balance among energy hubs becomes the crux of the matter. An optimal scheduling strategy based on incomplete information game was proposed for regional integrated energy system with multi-energy hubs including carbon trading. Considering carbon trading, power to gas（P2G） technology and carbon capture systems（CCS） coupling technology were introduced to seek a win-win situation of low-carbon economy in the system. The results show that the optimal scheduling model constructed in this paper adopts carbon trading and carbon capture system to coordinate and control carbon, making the carbon emissions reduce by 6.4% and ensuring economic benefits as well.