结合实例，就应用灰色预测方法对累计交通量进行预测时灰色模型的建立问题作了对比分析．分析表明，预测不应仅局限于用 Ｇ Ｍ（１，１）模型，应根据已有交通量分布情况，建立多种函数的预测模型，经分析比较后选用之同时将静、动态 Ｇ Ｍ（１，１）模型的预测结果进行了比较，结果表明后者的预测误差反而较大 Combining with the example, this paper makes a comparative analysis of the gray model when using the gray prediction method to forecast the accumulated traffic volume. The analysis shows that the prediction should not be limited to the G M (1,1) model. Based on the distribution of the existing traffic volume, a prediction model of various functions should be established. After analysis and comparison, the static and dynamic G M (1,1) model, the results show that the prediction error of the latter is rather large