Fig trees have mutualism relation with their pollination insect.They are mutualism partner with closest relation and long history between animals and plants.They have formed figs-pollinators mutualism system in structure,physiological function and life cycle synchronism,and coevolution in coordination up to now.This paper discusses the biological feature of fig trees and wasps,and interaction between them.It also expounds the formation,maintenance and biological significance of  figs-pollinators mutualism system.