The comprehensive effects of high temperatures and corrosive environments tend to cause grievous damage to the workpieces. In this paper, the effect of high temperature on the corrosion resistance of Fe-based amorphous coatings was studied. And the corrosion kinetics and variation of passive film characteristics of coatings at 25°C and 105°C were investigated by potentiodynamic polarization curves, electrochemical impedance spectroscopy, Mott-Schottky analysis, and et al., respectively. It was found that high temperature accelerated the corrosion process, as well promoted the thickening of passive films, and had a dissimilar influence on iron ions of different chemical valences synchronously. Besides, the increase in dopant concentrations and the structural change of the passive film were the main factors affecting the corrosion resistance.