在模糊目标信息系统决策约简和可辨识矩阵定义的基础上,讨论了可辨识矩阵的性质以及与决策约简集之间的关系.同时定义一种新的属性重要度,并将此作为启发式信息,设计了一种模糊目标决策信息系统最小决策约简算法,通过实例验证该算法简捷、有效. On the basis of decision reduction and identifiable matrix definition in fuzzy target information system, the properties of discernable matrix and its relation with decision reduction set are discussed. At the same time, a new attribute importance is defined and used as inspiration In this paper, we design a decision-making algorithm of minimum decision-making in fuzzy objective decision-making information system. The example shows that the algorithm is simple and effective.