Abstract:The clean development mechanism project is emission reduction project supported by low-carbon technology and capital from developed countries,it has been seen as the carrier of low-carbon technology and an important way of achieving low-carbon development in China.China has plenty of CDM projects, this paper aimed at studying the regional differences of its distribution. The study firstly classifies the countries into 5 regions by using clustering analysis.Secondly analyzing the relationships between number of CDM projects and technology input,economic level,industry structure during the year of 2005-2013.The results indicate that the technology input negatively affects the distribution of CDM projects across regions,the more CDM projects the greater the influences.However,the economic level plays a positive role,the more developed the region,the more environmental needs from its residents,so the more the region invests in CDM projects.The industry structure is the main cause of regional differences of CDM projects distribution and has a positive role,which means the higer the secondary industry ratios the more CDM projects the region has.