Abstract: In order to alleviate the supply shortage of the piped natural gas source during the heating period in winter, the supply of liquefied natural gas (LNG) gasification stations has become an important way to supplement the supply of the pipeline network. This paper proposes a joint low-carbon operation mode which uses carbon storage equipment as a hub to connect carbon capture power plant, power-to-gas (P2G) and LNG gasification station. In this mode, part of CO₂ captured by the carbon capture system is supplied to P2G to generate methane, while part of the rest is supplied to the LNG gasification station for using cold energy to produce liquid CO₂ and dry ice. Through the construction of the joint low-carbon operation mechanism, the low-carbon economic operation of the electricity-gas integrated system is realized. The system coupled by improved IEEE 14-node power network and Belgian 20-node natural gas network verifies that the operation mode of the electricity-gas integrated energy system proposed in this paper can not only improve wind power consumption and achieve carbon emission reduction, but also ensure the demand of gas consumption and improve the economic efficiency of the system operation.