Abstract：While climate foreign aid is an emerging field of China’s South-South cooperation, it is an important way for China to participate in global climate governance. The institutional arrangements of climate foreign aid are rooted in the socialism with Chinese characteristics, forming a “three-dimensional structure” of the organizational, guiding and regulatory institution of climate foreign aid. Currently, China’s climate foreign aid is faced with new situations such as the escalation of the political and economic competitions among the major powers, the increasing downward pressure on the global economy and the transformation of global climate governance. It is necessary to contribute to the function of climate diplomacy, ensure the supply of climate resources, and respond to global climate threats through the institutions of climate foreign aid. At present, there are still shortcomings and deficiencies in the institutions of climate foreign aid, and it is necessary to optimize the organizational institutions, improve the guiding institutions, and promote the regulatory institutions. This theoretical analysis and optimization plan could provide institutional theoretical approaches or optimization options for China’s foreign aid, and also provide institutional experience for the improvement of China’s foreign aid.
