Based on the so-called "Christmas" Constitution of the Republic of Croatia, which was adopted on December 22, 1990, the Constitutional Court of the Republic of Croatia was established as a separate body, independent of the legislative, executive and judicial authorities whose primary function is to ensure the protection of constitutionality and legality with special emphasis on the protection of fundamental human rights and freedom of every individual. The constitution of the Constitutional Court is prescribed by the Constitutional Law on the Constitutional Court of the Republic of Croatia and the Rules of Procedure of the Constitutional Court of the Republic of Croatia. Based on the same, judges of the Constitutional Court ensure autonomy and independence in their work. The procedures under the jurisdiction of the Constitutional Court are: the process of assessing the conformity of laws and regulations with the Constitution, resolving conflicts of jurisdiction between legislative, executive and judiciary authorities, the responsibility of the President of the Republic of Croatia for violations of the constitution that he performs during his duties, monitoring of the political party, monitoring of the elections and the state referendum, and finally the process of submitting the constitutional complaint as a special protection instrument by the Constitution of guaranteed fundamental human rights and freedoms guaranteed of each individual that is submitted after exhausting the legal path exclusively for the violation of constitutional rights. The Constitutional Court decides on decisions and resolutions on matters within its jurisdiction.. These acts are compulsory and act erga omnes to all natural and legal persons and the paper presents the procedure for passing that distinction between these acts. The role of the Constitutional Court as guardian of the Constitution and Rule of Law is indispensable in every democratic, constitutional state.