Solar powered air conditioning system is hot issue in the study field of building energy conservation. An experimental platform of solar powered air conditioning system was carried out to test the efficiency of the solar powered air conditioning system and the coupled relation with the solar radiation intensity. The outdoor and indoor environmental test system was used to collect the performance parameter data of the solar powered air conditioning system. According to the analysis result, the transient thermal efficiency would decline with the rising normalised temperature difference. The transient thermal efficiency has the same variation trend with the solar radiation. The research result could help to improve the study of solar powered air conditioning system and its application.