This article is concerned to the achievement of the division of the law on public and private branches. Under the view of the authors such division is nominal and applicable just for study of law. Convergence confirms that the problem, functions and purpose of law are common, but the systemic and sectoral division of law are nominal. The main purpose of organizing relations is to organize any other relations, in particular which regulated by the norms of the private and public law. The relations which were built on the basis of the commons (norms) of coordination and subordination these relations at the really difficult period of history of Russia mediated, saved and changed the border between the private and public law, by virtue of that Russia survived the legal collapse. Today the question about not just obvious convergence of the private and public legal commons mentioned in the legal literature, means factually rapprochement of the subsystems of the private and public law, but also means intra-branch rapprochement of legal systems which form the branches of law.