The article presents and reveals the main tendencies of transformation of the legislative foundations of European integration of Ukraine at the present stage of state formation. While analyzing the problems of implementation of the Association Agreement between Ukraine and the European Union, the author highlights and reveals the content of three main tendencies that are characteristic for the development of the legislative basis of the European integration policy. In particular, the expanding of the current Constitution of Ukraine with the rules on the irreversibility of the European integration course, updating of normative documents regulating the planned character and gradual implementation of the provisions of the Association Agreement, amending the current version of the Association Agreement in order to update its provisions.
 The attention is drawn to the fact that the modification of the legislative foundations of Ukraine's European integration course is an important political and legal factor for the transformation of not only the system of the legal system of the state in the formal sense, but also of the legal consciousness of the broad masses of the population. This is explained by the phenomenon of the action of so-called «future law». In practical terms, such a phenomenon manifests itself in the fact that in the society on the mental level there is an increasing level of expectations from the state to activate pro-European policy, further reforming of the national law in the direction of implementation of European models of social regulation. Accordingly, there is an impact on the minds of people by "future norms of law", which are designed to regulate social relations, which are just beginning to emerge.
 Further priorities of expanding the legislative foundations of Ukraine's European integration are outlined. In particular, it is the optimization of the mechanism of substantial realization of European integration transformations in the practice of national state administration, as well as the preparation of legislative support to overcome the global political risks and economic threats that may occur in connection with the implementation of the Association Agreement. First of all, Ukraine should develop and accumulate the practice of applying the legislation in the sphere of increasing the investment attractiveness of Ukraine, guaranteeing the legal protection of foreign investments, adjusting the national manufacturing sector of Ukraine to the EU requirements, harmonizing the national model of legal regulation of the labor market with the EU, enhancing the institutional focus of the Ukrainian authorities to implement the EU Directives.
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