中文摘要：

研究了区间直觉模糊子群,且引入了区间值直觉模糊正规子群概念,并利用集合套研究了区间值直觉模糊子群和区间值直觉模糊正规子群.

英文摘要：

In this paper, the interval-valued intuitionistic fuzzy subgroup are studied.And the concept of the interval-valued intuitionistic fuzzy normal subgroup are introduced.Then,we study the interval-valued intuitionistic fuzzy subgroup and the interval-valued intuitionistic fuzzy normal subgroup by nested sets.