Based on the natural gas and solar energy coupled CCHP system with hybrid energy storage（heat storage/power storage），an optimization model is established from the aspects of energy saving，economy and envi? ronmental protection. The rated capacity of the prime mover，the start stop ratio of the prime mover，the solar ther? mal / photovoltaic area and the cooling ratio of the electric refrigerator are set as the optimization variables，and the quantum particle swarm optimization algorithm is used to solve the optimization model. After optimization，the opti? mal capacity and operation mode of the coupled system are obtained，and a hotel building in Guangzhou is taken as an example to verify the optimal model. The results show that the performance of the coupled system under the two optimal operation modes is better than that of the separate production system，and the performance under follow “electricity”demand mode（annual primary energy saving ratio：37.9%；annual total cost saving ratio：39.9%；an? nual CO2 reduction ratio：55.1%；overall performance：44.3%）is better than that under follow“thermal”demand mode（annual primary energy saving ratio：30.7%；annual total cost saving ratio：36.1%；annual CO2 reduction ratio：42.1%；overall performance：36.3%）.