Abstract: Ficus auriculata Lour and Ficus hispida Linn are important plant species in the tropical rainforest They provide foods and habitats for insects, birds and so on 20.088 samples of insects have been collected, including 8 orders, 21 families, 33 genera and 39 species on the F auriculata and 7 orders, 21 families, 32 genera and 37 species on the F hispida Common characteristics of insect communities show that pests species is abundant, the ratio is 94.6% 97.0%, but amount per species are limited and they belong mainly too Lepidoptera, Coleoptera and Homopyera etc Some insects not only eat fig fruits but also eat leaves, other eat leaves or branches In these insect communities, insects species are the most on the syconia, the ratio is about 54%, and amount is 93.1% 94.3% On the contrary, though species of beneficial insects are low, they have huge individual quantities The amount of pollination fig wasp is 86.4% 90.2% of all insects, and its successful pollination influences stability and development of fig trees communities.