In this paper, we analyze theories of bank stability on market concentration, financial deepening, bank income structure and international debt situation by using panel data for 18 emerging countries. Our results show that alternative financial system plays an important role in the bank risk behavior. The potentially important policy implication is that policies supporting financial deepening or promoting liquidity in the banking industry might not necessarily improve banking stability. One needs to take into consideration of banks competiveness incorporates with degrees of financial depth and macroeconomic factors evolvement. Liberalized financial system analogously is not necessarily the ultimate solution. | Banking stability, market structure and financial system in emerging countries