The European Central Bank is the main bearer of the monetary policy of the Eurozone. The goal of monetary policy is to promote maximum employment, stable prices and moderate longterm interest rates. It is a significant factor of every country because it regulates money and its circulation, it also refers to decisions made by central banks to influence the price and availability of money in the economy. In order to regulate and coordinate the amount of money in circulation with the trends and demands of the economy, monetary policy has created instruments, and those instruments are; open market policy, refinancing policy, liquidity reserve policy and selective credit policy. Monetary policy is divided into expansive monetary policy, which aims to increase the mass of the economy, and restrictive monetary policy, which aims to reduce the money supply in the economy. The role of the ECB is to manage the euro currency, maintain price stability and implement EU economic and monetary policy.