Separation of administrative law and presentation of various relations of this law to other, relatively autonomous branches, especially to civil law, are theoretically, legally and mainly practically important. These issues, in part controversial and contested, have aroused a lot of interest in legal writing for many years. In the changing reality and dynamic of social life, the issues in question do not lose their relevance. Norms of administrative law and civil law encroach, though at different time and with different intensity, on the space of public and private lives. Administrative law has an influence on a shape of civil law and civil law affects the image of administrative law. When a number of provisions is growing all the time as well as their interference is building up, norms of administrative law all the time intersperse with norms of civil law. Correlation between norms of these two legal branches is inevitable and usually useful. A rational legislator should render provisions of administrative and civil laws non-competitive. They should rather support each other and be complementary.