The concept of environmental political philosophy points to the weaknesses and contradictions of contemporary real democracies. They are based on such concepts of man, society and economy that do not take into account the finitude of natural resources as well as the limited ability of the planetary system to absorb pollution caused by all human activities. Real constitutional democracies determined by industrialism and the imperial way of life are therefore unable to ensure the long-term sustainability of the socio-economic, let alone the environmental, conditions of their existence. Environmental political philosophy points out that the deteriorating social and environmental conditions of life on the planet in the climatic, demographic and economic regime of the Anthropocene lead to circumventing or violating the basic constitutional principles on which the legitimacy of contemporary constitutional democracies rests. The aim of the thesis is to identify and formulate the principles of the concept of environmental democracy, i.e. a concept that would on the one hand preserve the basic democratic constitutional principles and at the same time reconcile them with the current knowledge of the Earth sciences about the vulnerability of the planetary system.