Abstract: Under the background of "dual carbon" targets, low-carbon and green development has become the goal of the transformation of integrated energy systems. For integrated energy systems that include electricity, heat, and cooling loads, an optimization scheduling method considering comprehensive demand response and hydrogen blending technology is proposed. Firstly, in order to enhance the system′s economic efficiency and energy utilization rate, electricity-to-hydrogen conversion and hydrogen blending technologies are employed to absorb excess renewable energy, and a hydrogen mixing unit is modeled to realize the time-shifting of electrical energy. Secondly, to fully tap into the potential of the demand side, an integrated demand response model is introduced. Finally, the optimal scheduling model is constructed with the objective of minimizing the comprehensive cost. The effectiveness of the proposed model is verified by setting different scenarios for simulation experiments.