Abstract: The fig-pollinator mutualism system is maintained by the reproductive relationships.In the way of dissecting syconia,and using statistics and comparative observation,diversity of pollination system of six species of figs in the northeast of Fujian and their mutual insects are studied.The result shows that flowers of the six figs can be divided into female flower,gall flower,male flower,and bisexual flower.The sex expression of the individuals of each fig species including dioecism and gynodioecy.The female and gall flowers have or have not pedicel (pistil stem) single-layer or double-layer range.The male flowers have distributive forms of dispersively-living,semi-collectively-living and collectively-living.There is difference in size of syconia,the number of flowers,the number of scales and distributing area of their function,and the form of forming outlet holes,which has homologous behavior of fig wasps.Each fig species usually has one kind of pollination insect,and the six fig species and their pollination insects respectively form their own independent pollination systems.It is obvious that such pollination systems have rich diversity.Each mutualism system has different choices of evolution to pollinating biology's character.This reflects the suit of both side of the mutualism evolution and reproductive strategy.Then it safeguards the stability of mutualism system.

Key words: fig trees, pollinating wasps, mutualism system, diversity