The study of the Institute of Customs Control is part of international integration processes. Under the rapidly changing international world facts, the international trade turnover in some directions is decreasing, and in others it is increasing at times, which affects the economy of all countries, their compliance with modern trends, part of all these processes is customs control, as one of the types of control at the state border, requiring the national security of states. The article compares the institute of customs control in the EAEU and the EU. On this basis, a comparison is made according to a number of criteria and key features. The legal regime of goods under customs control, its beginning, completion and correlation with other customs institutions are investigated. The general competence of customs authorities in the field of customs control is commented on. The circumstances of the goods being under customs control in accordance with the legislation of the EAEU and the EU on customs regulation are analyzed. As a result of comparing the institute of customs control in the EAEU and the EU, both similar and different features were identified. The comparison showed a mixed picture, since the two associations are at different stages of political and economic development, and are also characterized by different historical and geographical features.Aim. Study of the main criteria of the Customs Control Institute in the Eurasian Economic Union and the European Union.Tasks. Characteristics of the economic unions of the EAEU and the EU, as well as the study of forms of customs control in the EAEU and disclosure of customs control in the EU.Methods. Comparative legal analysis of international, supranational and customs law, as well as the study and analysis of popular science literature, description and generalization of the material in the process of research.Results. The protection of the security of the State is directly related to economic activity, namely, with the constantly flowing and increasing pace of international trade. States, uniting in unions, form a single legal field in which they create a regulatory framework. The EU introduced the institute of customs control earlier than the EAEU, since the EAEU relied on European experience when creating legislation regulating the customs area. With this in mind, this institute has similar goals and elements of the purpose of its conduct and holding.Conclusion. Actively developing integration processes lead to an increase in world trade turnover and increased control at interstate borders. Every state, and with it the unions, strive for safe and fast trade. Many elements become such tools, one of them is customs control. An institution that controls the legality, security and mutual cooperation of customs authorities and participants in foreign economic activity.