Abstract: Manufacture schedule is a complex decision-making procedure because of numerous factors should be considered when scheduling.To make the computer capable of scheduling，it should learn the manager’s scheduling behavior，which means abstracting scheduling rules from historical scheduling cases.This paper proposes a rough set-based method of abstracting rules，and validates it with an example.

Key words: rough set, manufacture schedule, reduction of decision-table

摘要： 生产调度是一个复杂的决策过程，其复杂性体现在决策过程中需要考虑众多因素。如果用计算机代替人进行生产调度，计算机必须能够学习人的调度行为，也就是从众多调度实例中提取规则。构建了一个基于粗集的调度规则提取方法，并通过实例说明其有效性。

关键词: 粗集, 生产调度, 决策表约简