Abstract: Under the“30·60”dual carbon background,the existing green certificate trading,carbon trading and demand response mechanisms will be linked,which can better reflect the low-carbon attributes of renewable energy and achieve low-carbon economy of the system. This paper constructs an economic operation strategy for an integrated energy system considering green certificate-carbon joint trading and demand response. Firstly,the green certificate trading and carbon trading mechanism is introduced,through the green certificate carbon emission reduction mechanism,the green certificate trading and carbon trading are linked;then the demand response mechanism is introduced to optimize the user’s energy consumption behavior,promote the consumption of renewable energy,and improve the profitability of green certificate and carbon trading. Finally,an economic operation strategy aiming at minimizing the sum of energy purchase cost,green certificate transaction cost,carbon transaction cost and demand response compensation cost is proposed.The calculation example results prove that the introduction of green certificate trading,carbon trading and demand response mechanisms in the integrated energy system has superior low-carbon economy.