In an ecosystem, observing the behavior of its internal carbon sources and sinks can effectively construct a carbon cycle coefficient to reduce carbon dioxide emissions and increase sinks. Considering that the observation of carbon sources and sinks is conducive to the dynamic use of carbon to reduce system carbon emissions, for this reason, a day-ahead optimal dispatch strategy for integrated energy system analogous to the behavior of carbon sources and sinks is proposed. This paper analyzes the role of the ecological carbon sources and sinks function in the integrated energy system, puts forward the model of carbon capture device, and carries out the system modeling based on the coupling conversion characteristics of multi-energy flow. The carbon source control and carbon sink detection indicators are proposed, and the relevant adjustment costs are established according to the indicators. With the overall goal of reducing the total operating cost, reducing carbon emissions, and improving the utilization level of renewable energy, an optimal scheduling scheme based on an improved particle swarm algorithm is proposed. The results of the example are compared and analyzed from the aspects of economic and environmental benefits, and it shows that the joint scheduling results of carbon sources and sinks equipment can reduce the carbon emissions of the integrated energy system and optimize the operation of different types of energy supply and consumption equipment under the coupling of multi-energy flow, and improve system operation economy and environmental protection.