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In this article Author present interrelations between European Union and Member States in the context of consideration of substantive law and procedural law. In the theoretical literature there is believe that european law is substantive law, but this law is applied in legal orders of Member States by their national procedure. This article contains the analysis of definition of procedural law. In Author's opinion a clear definition of procedural law is impossible. Generally procedural law is legal regulation opposite of substantive law. Author turns her attention to the problem of type of legal norms. One part of this paper is devoted to the problem of interrelations between procedural law and substantive law: priority of substantive law ( the concept of law H. L. A. Hart ). Autonomy of procedural law ( postclassical theory of process, procedural theory of justice of John Rawls, autonomy of the proceedings – for example tax proceeding ). This article is concentrated on the autonomy of procedural of Member States