Abstract: To provide the base date for insect resistant breeding of tea-oil tree, the preferences of Curculio chinensis adults for different host species were studied. Adopting field investigations and laboratory tests methods which included selective and compulsivity feeding, oviposition and olfactory response test, selective feeding and oviposition of Curculio chinensis adults on different varieties of host plants were tested. The results showed that pests could damage 2 varieties and 3 species of host plants, fruit drop before fruit picking were mainly due to pests’damage; the pest preference for Camellia semiserrata was higher than for the other species or strains in June; pest did not oviposit on the leaves, and also did not oviposit when pericarp thickness was longer than the deepest wormhole; female adults preferred buds to fruits and leaves during early adult period, but preferred fruits to buds and leaves during mating and oviposition period.