The 1992 Earth Summit in Rio de Janeiro, 2002 Johannesburg Declaration at the World Summit on Sustainable Development, and 2012 Rio+20 Summit fostered the political will for global environmental governance. A model of global environmental governance was established and as a consequence the power structure of global governance was also changed. On the other hand, against the background of global financial crisis and climate change, the mechanisms, leadership and organizational modes of global governance have also evolved continuously and global governance institutions are increasingly fragmented. Global environmental governance touches upon the survival, economics and politics of all states and concerns an array of actors such as the United Nations, sovereign states, and Non-Governmental Organizations (NGOs), so it entails a united and integrative strategy to solve the collective environmental issues.