The introduction of the euro in 1999 has created vast opportunities for the euro area banks to do businesses including lending both to the monetary financial institutions and the non-monetary financial institutions across the euro area countries. Since 1999 euro area banks has expand their extending cross-border credits through markets both of their home countries and non-euro countries, which developments have resulted in the increased use of the euro as an international currency in the dimension of the European financial market. This report is to review the decade of the euro area banking market development and to describe the market structure evolution and the strategies of major banking players and to find urgent tasks ahead in reconstructing of the euro area banking supervision.