REDD+ is an effective mechanism to respond to climate change. The key to make REDD+ mechanism implement smoothly is to improve the funding mechanism and raising money is the most crucial part in it. This paper expounded the current general framework of REDD+ capital mechanism,and it also explained the REDD+ present financial situations. Besides,it put more emphasis on analyzing the REDD+ non - market financing situations in some major countries,such as Brazil,Indonesia,Tanzania and Vietnam. On the basis of the analysis above,this paper came up with some problems about REDD+,such as the decrease of the number of REDD+ project financing,the difficulties in carrying out the promised fund, and high costs in fund regulation of REDD+. Finally,it put forward a few related suggestions towards the problems,which can improve the REDD+ capital source mechanism and promote the REDD+ project implement smoothly in the future.