The aim of this paper is to explain more closely the origin of ecological agriculture, which led to the fact that the whole world strives for organic products and nature conservation. To begin with, it is important to understand the difference between conventional and organic farming and the environmental impact of each. Furthermore, the influence of the European Union on its member countries in terms of ecological agriculture and which mechanisms it uses, and that they are equal for all, are explained. The Common Agricultural Policy and its first and second pillars were analyzed, and its goals were also discussed. The ways through which the Common Agricultural Policy is financed and that every resident of the European Union has their own contribution to it are listed. The influence of European Union funds, which are the most important for agriculture and to whom they are all available, is described. The influence of the European Union on all member countries and their involvement in ecological agriculture and the help it provides in the transition to it with conventional agriculture is stated. The financial periods for the multi-year program of the European Union and what is expected of the countries in the period that lasts currently and ends in 2027 have been clarified. The environmental mark of all member countries is shown and what is its importance. Finally, three countries that became members of the European Union in different periods are listed and how they are currently engaged in organic agriculture, the problems they face and what are the predictions for the future. Croatia, Germany and Slovenia were mentioned