The aim of the final thesis is to study and analyse the Constitution as the basic source of the Constitutional Law. Accordingly, tn the very beginning there will be explained the most important concepts and terms in connection with the thesis and described the legal and political status od the Constitution. Further there will be researched, explained and analysed constitutional law – other branches of law relations and everything will be substantiated by examples. The have been described the most important types of Constitutitons for the legal order of the specific state, beginning with the material and formal, written or unwritten, flexible (soft) and inflexible (hard) Constitutions, etc. However, since the analyse of the every brach of law always starts with the elaboration of the term and the content of the Constitutional Law, whereas it takes the most important place in the right regime, there will be defined the sources of the Constitutional lae, for without these norms, there wouldn't exist the analse of other branches of law. Certainly, in order to make legal regim as stable as possible, and since the altering of the Constitutional wording has very important role, there will be explained possible unequivocal options of the Constitutional wording.