Flexible load can actively participate in the operation control of the integrated energy system and interact with the integrated energy system. Flexible load scheduling and regulation is one of the important means to alleviate the contradiction between power supply and demand and realize the effective consumption of renewable energy. This paper presents an integrated energy system optimization strategy considering load flexibility and equipment with energy conversion characteristics. The strategy aims to improve the efficiency and flexibility of the system by optimizing the scheduling of energy production, storage and consumption within the community. At the same time, the flexible adjustment ability of the flexible load is used to adjust the real-time carbon emission economic penalty of the operator and the peak reduction economic compensation of the LAs, so as to achieve the purpose of energy saving and carbon reduction, so as to achieve the purpose of low-carbon operation of the comprehensive energy system.