We derive the Misner-Sharp-like masses of the Reissner-Nordstr(o)m black hole and the Einstein-Maxwell Dilaton-Axion black hole by using the modified first law of thermodynamics.Their surface tensions are investigated.For the Reissner-Nordstr(o)m black hole,the outer horizon radius is treated as a variable and the effective temperature is introduced.For the Einstein-Maxwell-Dilaton-Axion black hole,the outer horizon radius,the angular momentum unit mass and the parameter b are seen as three independent variables,and the mass,the horizon area and the angular momentum are functions of them.