The invention relates to a solar air conditioning system, comprising a hot oil loop, an oil recharge loop and a water loop, wherein the hot oil loop, the oil recharge loop and the water loop are provided with temperature sensors and pressure sensors; the temperature sensors and the pressure sensors are connected with a controller by signals; the controller is connected with electric three-way valves I, II, III and IV. The system provided by the invention has the advantages as follows: 1, the system is designed reasonably, and solar energy is utilized fully so as to increase utilization rate; 2, a heat accumulator and a heat source are increased so as to effectively complement heat power in time, and not to influence normal use of air conditioners; and 3, automatic detection and automatic control are utilized to save labor force and increase work efficiency.