Challenges of the Central Banks in the Post Crisis Period when Needed to Ensure the Financial Stability

The concerns of the European and domestic monetary authorities to reform the current regulatory but also supervisory framework became our main reason to achieve this scientific approach. The international financial crisis has generated important dysfunctions at the level of the main activity of central banks but also at the level of the objectives that these banks should meet. Thereby, if most central banks have normally pursued the objective clearly stated in their mandate as "price stability", nowadays they are trying to achieve the "financial stability". Thus the main objective of this study particularly concerns: highlighting the role of central banks in ensuring the financial stability; and analyzing the challenges of the central banks after the financial crisis.