Abstract:Climate financing is one of the main issues of international climate negotiations. Aiming at the issue of implementation of the ‘Green Climate Fund’ proposed by international climate conference, in this study, we calculate the financing burden sharing of the Annex II countrie (or region) under principle of ability-to-pay, historical responsibilities principle, sovereignty principle, and principle of consumption-based emission. The study shows that averaging burden shares from different principles is an alternative solution to climate financing. The United States, EU, and Japan undertake the main contributive responsibility in the international climate financing, the cumulative shared liability of these three countries (or region) exceeds 90%, among which the average financing share of the United States reaches 45%. When referred to funding pressures, the rate of climate fund share to the country’s GDP, the averaged funding pressures are in the scope of 0.2% to 0.33%, which are affordable for Annex II countries (or region). Under the various principles, the United States prefers principle of ability-to-pay measured by GDP; EU, Canada, and New Zealand prefer principle of ability-to-pay which weighted higher per capita GDP; Japan, Australia, Switzerland, Norway, and Iceland prefer historical responsibilities principle started from year 1850.