The applications of differential scanning calorimetry（DSC） in glass-forming ability and crystallization behavior of amorphous alloys are described. The parameters of glass-forming ability for amorphous alloys can be calculated by the temperature value of DSC curve, and the DSC in the study of the crystallization behavior of amorphous alloys also can be simple and fast. The differential scanning calorimetry technology will play more important role in the research of amorphous alloys.