Apriori算法是一种最有影响的挖掘布尔关联规则频繁项集的算法。本文简单介绍了Apfiofi算法，提出了Apfiofi算法的改进方案—— 长项优先的产生算法，它基于传统Apriori算法，通过改变候选项集的产生顺序来减少数据库访问。从而提高效率-Apriori algorithm is one of the most influential Boolean association rules mining frequent itemsets algorithms. This article briefly introduced Apfiofi algorithm, Algorithm Apfiofi program- the emergence of long-priority algorithms, which are based on the traditional Apriori algorithm, by changing the further set of options for selecting the order to reduce the database access. Thereby enhancing efficiency