本文针对目前国内外部分学者对D.普赖斯“最大引文年限”的若干争议,选择了“光纤通信”、“电子技术”、“植物学”、“解剖学”这四门学科,以65种中外文期刊,700篇著文为样本,分别对12948篇引文进行了统计分析,得出:在不同的学科领域里科学文献引文的“最大引文年限”亦有所不同。这一结果修正了D.普赖斯关于“最大引文年限”为二年的结论。认为:科学文献引文的“最大引文年限”一般地是随文献的半衰期变化而变化的,半衰期短接近二年,半衰期长则在二年以上。 In this paper, according to the current domestic and foreign scholars' contention on D. Price's “maximum number of citation years”, this dissertation selects four disciplines of “optical fiber communication”, “electronic technology”, “botany” and “anatomy” A total of 700 Chinese and foreign periodicals were selected as samples, and 12,948 citations were analyzed respectively. The results showed that there were also differences in the “maximum citation years” of scientific literature citations in different disciplines. This result amends D. Price's conclusion that the Maximum Citation Age is two years. It is considered that the “maximum quota of quotations” of scientific literature generally varies with the half-life of the literature, with a short half-life of nearly two years and a long half-life of more than two years.