The article is devoted to a topic as topical as the legal transformations in the Ukrainian system under the influence of international law. Therefore, the aim of the article is to discuss the theoretical and practical aspects of the study of the impact of international law on domestic law, as well as to identify the differences and similarities between international law and Ukrainian law in the specific field of criminal and civil law. The methodological basis of the study consisted in the use of the system-structural method, which made it possible to determine the place of international legal norms in the system of national legislation and, also, the comparative method of international and Ukrainian legislation in force. In the main results obtained, it is revealed that the transformation of Ukrainian legislation is carried out mainly under the influence of Western globalization, which implies the transformation of a certain international law. It was concluded that, in the legal sphere of Ukraine, international agreements have been greatly influenced by the transformation of international law through the application of Ukrainian law through a process of legal synthesis.