The subject of analysis of this article is the public-legal construction of economic freedom in the context of its basic function which is the realisation of a constitutionally regulated economic system. The detailed objective is to undertake a reconstruction of the freedom of economic activity in the light of theory and public law, to which the freedom in question first of all belongs. The object of research will be its subjective and objective scope. The basic research methods will be the dogmatic and historical-legal method.