Under the background of vigorously developing renewable energy, in order to coordinate the interest relationship between the upper comprehensive energy system and the lower electric heating load demand. First of all, a dynamic pricing mechanism to deeply explore the potential interaction between the upper and lower layers is proposed. The upper layer of the system gives the prices of various energy sources. After the prices are transferred to the lower layer, the lower layer optimizes the output of each unit to achieve mutual benefit and win-win results for multiple stakeholders. Secondly, the comprehensive demand response capability of flexible electric load and flexible thermal load is considered to achieve better consumption of renewable energy. Finally, CPLEX is used to solve the two-layer model iteratively to verify the effectiveness of the proposed model and algorithm.