A consolidated composite sorbent made of barium chloride impregnated with expanded graphite powder was tested and the performance of a solar-powered sorption air-conditioning system using this kind of sorbent was analyzed.Experimental results showed that the heat and mass transfer were both improved by the consolidated composite sorbent.The consolidated composite sorbent could uptake 0.61 kg ammonia per kg reactive salt.Moreover，the sorption was influenced by the heating water temperature，cooling water temperature，evaporation temperature and constraint pressure.For a solar air-conditioning system using this kind of sorbent，coefficient of performance（COP）and specific cooling power（SCP）both increased with evaporation temperature raised from 5℃ to 15℃，at heating water temperature of 80℃ and cooling water temperature of 30℃.The values of COP and SCP reached 0.5 and 192 W·kg-1 respectively at evaporation temperature of 15℃.