This study discussed the conceptual meaning and quantificative function of noun reduplication AA and AABB from cognitive linguistics perspective. While the noun reduplication AA has the conceptual meaning of ‘people, space, time and event’, the noun reduplication AABB is divided into 10 categories based on conceptual similarity. According to the method of observation of the group, noun reduplication AA and AABB are divided into collective set and distribution set. While collective set has mental representation in a way that is interconnected by group members, distribution patterns have mental representation in which members of a group are distributed in a way that is independent of each other and individual members are highlighted. When the noun reduplication ‘AA’ is used in context situations in which it is provided the associated mental representation. When the noun reduplication ‘AABB’ is used in context situations in which it is not separable from member to member, it is represented as a collective set and the whole group is highlighted in context in which one event occurs sequentially, the group is represented as a distribution pattern, highlighting individual members.