System of the public administration or public sector is generally define as a unit or a set of component parts. In most cases, that whole is separeted of their environment. Conceptual restrictions like that is used cumulatively, so in the same moment, system look like a whole with specific division of their component parts or elements, and as a whole who is diffirent of their environemnt, but in specific related with them in the same time. System of the public sector as a whole wich is composed by her conceptual parts also means reciprocal conection of that parts, but system as a entity in relation with their environment creates to the opinion that there is a conection across the borders of the system which creates certain relation. The public administration is increasing and differantianting, i.e. it creates a new departments wich primary aim is satisfy the requirements of the local citizens for diffirent services. Basis of any system of human cooperation is the divison of work. The statment administration organizations in Republic of Croatia ( state administration, state institutions, state of directorate) are formed by to the law on the organizations and scope of the ministres and other organs, but in the during of time, many of them was changed their names. Many administrations in the Republic of Croatia established a secondary organizations because some administration jobs require a specific degree of individualds, or special way of working. If the need for autonomy increase, the state will be established a new administrative organizations, whose organs will be directly responsible to the government.