Abstract: Ficus tree is a key species in the ecosystem of tropical rain forest in Xishuangbanna.The animal community is established by feeding,perching and breeding on the fruits,leaves,branches,fallen leaves and branches of Ficus,and even in the soil under the tree.The community helps Ficus tree with pollination and spread.And a correlation between Ficus and animals is closely established in the ecosystem.The data were collected in Menglun tropical rain forest reserve,endangered plant migratereserve,banks of Luosuo river and living compound of botanic garden in Xishuangbanna,in the sampled sites in regular time.The data indicate that the animal community in the virginal tropical rain forest with abundant Ficus trees has a diverse structure and it has much more species.