This diploma thesis deals with the issue of the cross-border conservation area of the Eastern Carpathians, where the legislation and management of this biosphere reserve is compared between Slovak Republic and Ukraine. The aim of the thesis is to analyze, compare and critically evaluate the condition of protected areas according to the environmental legislation in the individual states and the management in these protected areas according to the actual condition they are today. The first part presents brief information about the development of the observed areas and its gradual transformation into a tripartite biosphere reservation of three countries - Poland, Slovakia and Ukraine. The work continues with the analysis of selected aspects of nature conservation legislation in the Slovak Republic and Ukraine. The condition of parks and their management were also analyzed. In the results, the analyzed aspects were evaluated and compared between the two countries. The work points to defects in the nature conservation legislation of both countries, which do not provide sufficient legal protection for these territories. On the basis of actual events, the management of NP Poloniny NPP and NPP Uzansky is critically evaluated.