"The European Public Prosecutor's Office (EPPO) is authorized to investigate, prosecute and file indictments for criminal offenses that harm the EU budget." The aforementioned institute was created recently, 6 years ago, in 2017 to be exact. Namely, the establishment of the European Public Prosecutor's Office (hereinafter: EPPO) has been discussed since 2013 when the European Commission submitted a proposal for its establishment, but it was only 4 years later that a unanimous agreement was established by the Council and the consenting European Parliament. After the establishment of the contract, Regulation (EU) 2017/1939 on the establishment of the EPPO was adopted. The threat to this office is the working group "Unit for the Coordination of Fraud Prevention" (UCLAF), which was established in 1988 within the General Secretariat of the European Commission. "UCLAF worked alongside national anti-fraud services and provided the coordination and assistance needed to resolve cases of transnational organized fraud." In 1995, the Santer Commission resigned and proposals for the establishment of a new body to fight against whistleblowers began to arrive in 1995. OLAF, whose first director was Franz-Hermann Brüner. In this thesis, I covered this topic through 5 points, namely: The European Public Prosecutor - in general, the structure and organization of the European Public Prosecutor's Office, I also stated the tasks and powers of the European Public Prosecutor's Office, and the impact on the national judiciary and the sovereignty of the member states . I concluded the paper with a conclusion, a list of references and a list of pictures.