Specificity of functions of criminal procedure, according to Yugoslav and other systems, give to the relevant proceedings the characteristics of legal controversy between the parties - plaintiff and accused who plead before the court while seeking the settlement of the relevant criminal matter. Since the majority of criminal offences is prosecuted as an official duty, the function of accusation is mainly effected by the public prosecutor as a state agency and the party in the criminal proceedings. The accused is a party with the function of defense, but at the same time he is a possible source of evidence in such proceedings. Public prosecutor is in a way favored as compared to the accused, particularly in the preliminary proceedings, since some rights of the accused are restricted in order to facilitate the investigation. However, temporarily disturbed balance is restored in subsequent stages of the proceedings, so that their final equality is not imperiled. In addition, the accused is also deemed guiltless, he has the right to defense and specific privileges which counter some prerogatives of the public prosecutor as the representative of state authority. Accordingly, it is possible to conclude that there is no complete equality between the parties in the criminal proceedings in all stages, namely phases. In other words, this is an equality of principles, namely of equality of their procedural rights in the final analysis - if one views the criminal proceedings in its entirety, including the active role of the court in the dispute between the parties.