Amorphous alloys Fe41Co7Cr15Mo14C15B6Y2 were prepared by vacuum arc melting method and nano-crystalline Fe41Co7Cr15Mo14C15B6Y2 alloys were obtained by different annealing technique. The corrosion resistance of the alloys compared with its counterpart amorphous alloys in 1.5 mol HCl solution were carried out by the potentiodynamic polarization method and the electrochemical impedance spectroscopy (EIS) technique respectively. The crystallization processes of the samples were identified by X-ray diffraction and differential scanning calorimeter. The morphologies of the samples after potentiodynamic polarization were observed by SEM. The results show that amorphous alloy has a higher corrosion resistance than that of the counterpart nano-crystalline alloys, but the self-corrosion current density and passivation coating resistance of nano-crystalline alloys is the same order of magnitude as amorphous alloy, which mean that the decline rate of corrosion resistance of nano-crystalline alloys is not very obvious.