The goal of the final paper is to explain public administration and public administration reforms. The growth of modern administration as well as its equipping with modern technical means is shown as a positive side of modern development of administration. In today's time, administration takes on and realizes important social tasks. Modern administration has changed significantly, even when it comes to the people who work in it. Today, the administration is mainly made up of specialized early experts. As for the development of modern administration, it took place through two phases. The first phase lasts mostly until the end of the 18th century. The second phase of development lasts until today. In the eighties of the 20th century, several countries started to implement reforms in public administration, the goal of which was to ensure its proper functioning in the newly created relations, both with regard to the global and regional context. In Great Britain, the reform processes conditioned a radical approach to reforms and a strong political will for change. German public administration is traditionally based on an organizational model that is a fundamental characteristic of the continental European tradition. For the French, the important role of statehood, the central role of law in their state administration, and the high evaluation of the quality of leading administrative staff in their public administration stand out. Nevertheless, the French administration, like the German or British one, is facing serious difficulties that require appropriate reform measures in order to adapt to the new circumstances caused by the economic and technological changes that have swept the world in the past decades.