The theses "The Constitutional Ordinance of Republic of Moldova.1990-2007" represents a complex analyse of crucial moments of Republic of Moldova political life like the independence proclaiming on 1991, the Constitution adopting on 1994, the level of political culture of local people and the principle of separation of powers in the state, with the representatives institutions as the parliament, govern and presidency. This study is structured in three chapters divided into paragraphs from 3 to 5 each of them and the subjects are systematized in chronological order respecting the most important events of the last two centuries of Moldova`s history. The bibliographical support of the this work is formed by a vast collection of specialized studies of the Moldavian, Italian, Russian and American researchers. The collection of the fundamental laws and documents used in this study made it to be a complex contribution in understanding the South-Eastern Europe state: Republic of Moldova