In this Master‘s thesis, based on the Council of Europe, the European Union, Lithuania‘s national legislation, scientific literature and works of the international organizations, the concept and the process, methods of money laundering, ways to create an effective money laundering supervision system in the state and the development of legal regulation is examined. In the first chapter, the concept and the process, methods of money laundering, the negative impact on the state economy and institutions is examined. In this chapter, based on the Financial Action Task Force (FATF) works, some specific methods of money laundering were examined in detail: trade-based money laundering, money laundering related with gold, diamonds, new payment metho...