The article concerns penal – administrative procedure used by administrative organs in the Second Republic of Poland, from which derives the current transgression procedure. Before the unification in 1928 there were four legal systems regulating transgression procedures. In the 1918–1928 period additional complications of legal system emerged because of lack of consistency in penal – administrative legislation. The article presents sources of law on transgression procedure before and after 1928, outlines the course of administrative procedure in penal cases and describes the possibilities of judicial control over administrative jurisdiction of both common and administrative courts. The article presents also the problems connected with interpretation of penal – administrative regulations in the Supreme Court’s jurisdiction.