The addition of renewable energy such as biomass energy increases the complexity of microgrid operationcontrol． The impact of intermittent and fluctuating renewable energy generation on the stability and security of powersystem is the key problem to be solved． In this paper，the CHP microgrid with biomass energy is studied，and thedegradation cost model of battery supercapacitor hybrid energy storage is constructed． Considering the agingcharacteristics of the energy storage system，the incentive demand response and the uncertainty of renewable energygeneration，a day ahead day multi time scale microgrid operation model is established． The results show that the biomassenergy CHP microgrid with hybrid energy storage can meet the system economy and power fluctuation，slow down batterydegradation and prolong service life．