Against the difficulty of optimal scheduling of integrated energy systems under the operating conditions of multiple energy complementary mechanisms, a multi-objective optimal scheduling study is carried out considering the reduction of system operation and maintenance costs, carbon dioxide emission and renewable energy abandonment. A mathematical model is established for all the equipments in the electric-gas-heat-cold energy system. The constraint conditions that can simulate the long-term operation scheduling of the integrated energy system are established to solve the modeling difficulties of energy storage equipment in the long-term operation simulation, and the comprehensive energy system is optimized by using low-carbon economic operation index. The results of the minimum operation cost scheduling and the minimum carbon emission scheduling are compared. Moreover, the influence of carbon price and operation and maintenance cost increase on scheduling results is simulated. The simulation results show that, using only the minimum operation and maintenance cost or the lowest carbon emission as the scheduling index will lead to high carbon emission or high operation and maintenance cost, and the low-carbon economic scheduling considering the consumption of renewable energy and carbon emission reduction index can reduce the low-carbon economic operation cost of the whole system.