The advancing degradation of the ecosystem and the occurring climate changes demand decisive action to be taken by citizens, aimed at levelling the results of the lack of balance between the natural environment and business operations. The growing importance of ecology is reflected on the international financial market in the form of green bonds. This article is devoted to green bonds which are a specific group of securities, namely ecological debt instruments. Despite the green debt being one of the most recent segments of the capital market, its very dynamic expansion can be observed year by year. The article is aimed at identifying the conditions for the development of the global environmental bonds market, specifically the factors stimulating and inhibiting the process. The article is a review in character and the following research methods were used in order to achieve the desired objective: analysis of subject literature and data analysis from the green bonds market, a case study, a descriptive and an inductive method.