The effect of Y and B content tailoring on the crystallization behavior and corrosion resistance of Fe76-2xY4+xB20+x(x=0 and 2) glassy alloys have been investigated. The tailoring of yttrium and born content enhances the thermal stability of x=2 alloy, alters the crystalline mode from a two-stage of x=0 glassy alloy to a three-stage of x=2 glassy alloy. Crystallization deteriorates the corrosion resistance of x=2 glassy alloy in alkaline solution. With increase annealing time from 5 to 30 min, the corrosion potential and its corresponding lattice constant of α-Fe phase of x=2 alloy show a similar change, the result is related to the change of solute atom composition in α-Fe grain in the local galvanic cell reaction.