Many environmental problems which are waiting for an urgent solution, such as global warming, climate change, endangered creatures, water pollution, ozone layer, are global. The insufficiency of policies carried out in the national area in the solution of global environmental problems has brought up the concept of “global environmental governance”. Global environmental governance understanding can also be expressed as a search for a solution based on international cooperation. The principle of cooperation, which is also one of the accepted principles in international environmental law, imposes responsibility on all national and international institutions, especially the states. International cooperation is very important in terms of researching, defining, producing and preventing environmental problems and it also provides the emergence of international texts and conventions for the protection of the environment, which forms the basis of international environmental law. International organizations play an important role in the creation, negotiation and implementation of these texts. In our study, first of all, the contribution of international conventions and global and regional organizations, which are the most important tools of realizing international cooperation; and later Swedish example in environmental governance understanding will be examined, since Sweden constitutes an example in reflecting the environmental governance understanding to its laws, judicial system and the functioning of its institutions.