The general aim of the paper is a systenatization of concepts and also an analysis of some aspects of the process of forming institutional infrastructure in Europe after the collapse of centrally managed economic system. Characteristic feature of such transformations is that they concern mainly the sphere of non-material components of economic subjects' surrouding. This involves difficulties in monitoring them and in interpreting them in a strict way. Europe needs a transformation of all the elements of its institutional infrastructure. In teh case of such institutions-organizations as European Union or NATO - an evolution is expected towards their more universal character. Within the institutions of codified principles the developing of European political infrastructure (i.e. agreements serving increased co-operation of all States of the region) is more particularly desirable. The element that unites transformations of institutions-organizations and institutions-formali zed principles is the fact that both of them are undertaken fully consciously. Also changes within institutions-non-formalized principles are of much importance for the process of European integration. The changes are the result of very complex and time consuming economic and social developments. The need for such changes involves more particularly the societies of former Eastern Europe which, under specific conditions of centrally planned economy, have developped institutional system quite difficult to adept it to the market economy. Digitalizacja i deponowanie archiwalnych zeszytów RPEiS sfinansowane przez MNiSW w ramach realizacji umowy nr 541/P-DUN/2016