Using the SWOT analysis method, this paper analyzed the internal strengths, weaknesses, external opportunities and threats of forest carbon sink projects in Yunnan Province. It found that Yunnan Province has strengths in economic environment and practical experience, weaknesses in social participation, project scale and carbon sink talents, opportunities in international climate environment, domestic policies, etc., and threats in project crediting period and forest resource protection, etc. In view of these, Yunnan Province can change the participation mode of forest carbon sink projects, adopt appropriate trading methods, get familiar with the relevant rules of forest carbon sink projects, strengthen the publicity and research of forest carbon sink theory, strengthen the management of carbon sink forests and expand forest carbon sink projects to enhance the market competitiveness of the Yunnan forest carbon sink projects.