Na₂O-CaO-Al₂O₃-SiO₂ glass-ceramics is a new kind of constructional material. It not only provides with good mechanical properties but also possesses of good decorative effects. The kinetic parameters of this glass-ceramics were calculated by differential thermal analysis (DTA), and the crystallization kinetics of this glass-ceramic system was investigated. The results indicate that the crystallization activation energy (E) and kinetic crystallization parameter k(Tp) increase with increasing CaO content eventually. The crystalline indexes (n) are all less than 3 and indicate that for this glass-ceramic system the crystallization process is surface crystallization. （From : No.1, 2006 Glass & Enamel )