Abstract: s: Ficus auriculata is a gynodioecious plant.Its pollinator is Ceratosolen emarginatus,it is highly co-evolved mutualists that depended completely on each other for reproduction. Hence, their structures showed adaptive change. The female flower of Ficus auriculata varied markedly in style length. In the female inflorescence, the style of female flower was long and had some bristles; Stigma was funnelform and possessed short hairs. The structures of long-styled female flowers could prevent oviposition and be beneficial for sticking pollen. Short-styled female flowers developed in the male inflorescences, its style was smooth and suitable for laying eggs. The population of Ficus auriculata had inflorescences around the year, there were 2 peaks in production of female trees, the fruit-bearing ratio was 80%. Most male trees bore fruits from October to March of next year, the fruit-bearing ratio attained 90%. Male inflorescences mainly provide places for pollinating wasps to survive the winter, and producing enough pollination wasps to following fruit-bearing peak of female trees. In the population of Ficus auriculata, diameter of male inflorescence was larger and its developing time was longer than that of female inflorescence, which it costed 125 days to complete whole developmental period, and 78% of male inflorescences could normally be mature. However, female inflorescences only costed 80 days from pre-female to mature phases. 22% of female inflorescences could successfully produce seed because inflorescences were eaten by insects or affected by other factors. Moreover, five species of non-pollination also lived in inflorescences, they laid eggs outside fig to compete ovaries with pollinators, or parasitized pollinators.In result, the population of Ceratosolen emarginatus was restrained, and further influenced the pollination and seed production of Ficus auriculata.