The purpose of this paper is to develop an urban growth model by cellular automata (CA). First, we tried to analyze the behavior of Batty and Xie's CA model, and understood its characteristics. Next, we modeled urban growth process based on their concept, and then developed a CA model. Our model is applied to Toyohashi-Toyokawa area and Mokpo city in Korea. The estimated urban area is compared with the actual urban area by Cramer's coefficient of contingency, Yule's coefficient of association and fractal dimension. From the results of simulation, we confirmed the reproductivity of urban growth for past about 100 years.