A solar air conditioner consists of tubular energy collectors, an energy-storing part, an automatic light-electric inter-compensator, an exchanger, one-way valves, solenoid three-way valves, a condenser, a distiller, a pressure-reducing throttle valve, an enhancer, pressure-regulating valves, a relay console, a blower, and conveying and conducting pipes. Its outdoor unit consists of the tubular energy collectors and energy storing part with the exchanger and the automatic light-electric inter-compensator inside. The exchanger is connected with the condenser and then enhancer via one-way valves and solenoid three-way valves and pressure-regulating valves. The distiller with the relay console and blower is connected with the condenser and enhancer at both ends of the distiller respectively. The said inter-compensator is connected with relay console via electric wires. The conveying and conducting pipes make connection of all parts. It has a simple structure, saves energy, runs in a closed loop at low cost stably and durably, without media loss and noise, and is easy to be used widely.