The crystallization behaviors of Cu-mold suction-cast La62Al15.7(Cu,Ni)22.3 bulk amorphous alloy were studied by isothermal and non-isothermal crystallization annealing method. The results show that the crystallization process of the amorphous alloys includes three stages; the products for the different stages are La, Al3La and Cu-and-Ni rich unknown phases, respectively. The activation energies Eg, Ep1, Ep2 and Ep3, corresponding to characteristic temperatures Tg, Tp1, Tp2 and Tp3, respectively, were obtained from the Kissinger and Ozawa equations. The relation of activation energies has the sequence of Eg