Abstract: Investigation and observation was carried out on insect pest damaging Camellia sinensis plantation in Tongbai county, Henan province. The result demonstrated that there were 48 species of 32 families and 10 orders insect pests. Among them, 17 species of 10 families of Lepidoptera occupied 35.4% of the total, 6 species of 5 families of Homoptera and Coleoptera, 12.5% respectively, 9 species of 4 families of Orthoptera, 18.8%, 3 species of 2 families of Hemipter and Diptera, 6.3% respectively, 1 species of 1 family of Blattodea, Thysanoptera, Acarina, Hymenoptera, 2% each. Special investigation was implemented on damage characters of 10 species of Lepidoptera, common but had serious damage to tea plantation.