Abstract: The subject of the study is the legislation of the EAEU member states on administrative offenses in the field of customs. A comparative analysis of the norms on administrative responsibility for non-declaration of goods operating in the Russian Federation, the Republic of Belarus, the Republic of Kazakhstan and the Kyrgyz Republic is carried out. The comparison of the list of administrative offenses in the field of customs affairs provided for by the national legislation of the Russian Federation and the Kyrgyz Republic was carried out. The relevance of the research topic is due to the fact that unified customs regulation is carried out on the territory of the EAEU, but administrative responsibility for violation of customs regulations is regulated by the national legislations of the EAEU members. At the same time, the sanctions and the list of compositions in each state differ significantly. The disproportionality of administrative penalties provided for by the administrative legislations of the EAEU member states has been established, and the need for unification of the composition of administrative offenses in the field of customs affairs, i.e. the establishment of a general list of articles providing for administrative liability for violation of customs rules, has also been identified. The importance of legal regulation of administrative responsibility in the field of customs in the EAEU states is underestimated, despite the fact that the institute of administrative responsibility is an effective tool for ensuring compliance with the customs legislation of the EAEU and national legislation on customs regulation. The directions of unification of legislation on administrative responsibility in the field of customs affairs in the EAEU states are formulated.