灰色预测通过鉴别系统因素之间发展趋势的相异程度，即进行关联分析，并对原始数据进行生成处理来寻找系统变动的规律，生成有较强规律性的数据序列，然后建立相应的微分方程模型，从而预测事物未来发展趋势的状况。其用等时距观测到的反应预测对象特征的一系列数量值构造灰色预测模型，预测未来某一时刻的特征量，或达到某一特征量的时间。-Gray predicted by the degree of dissimilarity between the trends identification system factors, namely, correlation analysis, and generate raw data processing system to find the law changes, generate a strong regular data series, and then establish the appropriate differential equations model to predict the future development trend of the situation of things. When the number of its series with an equal response　the observed object features predictive value of construction gray prediction model, to predict the future of the feature quantity at a time, or up to a certain amount of time feature.