Nowadays world economy is becoming more and more integrated due to regional integrations. Many economists, politicians argue about theeffectiveness of these regional integrations. The purpose of the research paper is to analyze the functions of these integrations, their goals,aims and the benefits for the member country. The research was conducted by several methods, the previous researches about the regionalintegrations issue were analyzed; the survey and interview were conducted. The result is that the membership of some influential and strongregional integration gives some benefits to the country; many countries have been developed and made impressive progress with the help ofregional integrations. But to conclude, behind the benefits there is politics on which the policy of international organizations and their actionsdepends. Sometimes a member country has to give up its independence and freedom of choice, it should act more carefully, because it is partof integration and has higher responsibility.