The article studies the development of integration processes in Europe and Eurasia. The purpose of scientific research is to identify the similarities and differences between European and Eurasian integration. The theoretical relevance of the research lies in the comparison of the integration processes regarding the analysis of demographic and socio-economic development indicators of the EU and EAEU countries, as well as the integration mechanisms and instruments. The research comes to the conclusion on the possibility of adopting the European Union integration experience for the further integration processes in the Eurasian integration process. The primary tool for research is the comparative analysis. It is noted that the economic integration of countries in the post-Soviet space follows the path of the European Union in terms of adopting the organization principles. However, despite some similarities, integration associations have significant differences in the starting conditions, motives and context of integration, and the tools and mechanisms for its implementation. The authors conclude that the implementation of certain fundamental principles of constructing European integration, such as federalism and democracy, is not possible in EAEU decisions making. Nevertheless, the achieved harmonization of some regulations and standards of the countries of the two integration associations, in the process of borrowing European experience, will contribute to their further economic convergence and interaction. The practical relevance of the research is to show the possibility of partial adopting of the EU experience for further integration of the EAEU countries and the need to improve the theoretical foundations that could form the basis for the development of Eurasian integration.