Renewable energy sources， such as wind， solar， geothermal， ocean， biomass， and waste-to-energy9 have attracted wide attention and developed rapidly in many parts of the world. However， most of renewable energy patents are held in developed countries， which play important roles in developing renewable energy technology. This restricts the use and development of renewable energy sources to some extent.
　　A compulsory license permits a government （or a third party authorized by the nation） to use a patented invention without pernussion of the patent owner in exchange with the payment of a govemment's determined royalty. Therefore， in order to promote renewable energy technology in developing countries， appropriate restrictions of the right of patentee of renewable energy technology are worthy of exploration. This paper purposes to argue that compulsory licenses should be introduced into renewable energy sector in China and to explore system design by means of analyzing a variety of interests stemming from a political philosophy perspective.
　　In Chapter 1， after making a review of existing researches including the literature on compulsory licenses， pharmaceutical industry and environment-related field， I pointed out the following limitations of existing researches. First， besides pharmaceutical industry there is no research from a perspective of political philosophy in renewable energy technology. Second， the research of compulsory licenses in a specific country is also rarely studied. China is undergoing problems by haze and looking forward to bringing about changes. Based on my assessment of the literature， the objective of my research is to analyze the current situation of Chinese compulsory license system and to propose a new mechanism of such license by developing concepts and ideas utilized in the politic-philosophical literature on the idea of interest.