Based on the statistical theory of grain growth and the probabilistic rule, a 2D cellular automata ( CA ) model for normal grain growth is proposed, into which the curvature-driven mechanism is explicitly introduced. 结合晶粒生长的统计分析理论和概率性转变规则,建立了基于曲率驱动机制的晶粒正常生长的二维元胞自动机模型。