The development policy of the European Union is primarily focused on countries that do not have a satisfactory level of development, and they include countries in transition from transition to capital - intensive capitalist, where depopulation and aging are often present, reduced natural growth and low birth rate, rural areas are extremely backward in relation to urban areas that are not at the level of satisfactory development of European requirements, and the interior of the countries is characterized by extreme economic backwardness compared to the coast, due to rural and mountainous terrain, but also due to the unattractiveness of such areas coastal regions. The aim of the research is to present the development policy of the European Union as a significant integral part of its overall development. The purpose of this paper is to understand the effects of the application of the development policy of the European Union on the member states, especially in the field of development of developmentally uneven areas and what advantages it brings. In this way, it is important to know the future and perspectives of the development of EU development policy through its implementation, ie how much the Union itself will progress or reduce regional inequalities by investing in overall development.