Field experiments was conducted on Tomato with a variety of Pusa Ruby during Rabi 2015–16 and 2016–17 at HRC of Sardar Vallabhbhai Patel University of Agriculture and Technology, Meerut. The experiment aimed to evaluating the major insect-pest of tomato in Meerut during Rabi, effect of biotic and biotic factors on population of tomato fruit borer, The experiment was laid out in the randomized block design (RBD) with 10 treatments and 3 replications. Compilation of the information on insect succession and field incidence revealed that about 6 species of insects were observed to be associated with various stages of the tomato crop (after transplanting) at Meerut. Jassid (Amrasca devastans (Butler) Hemiptera, Cicadellidae), aphid (Aphis gossypii (Glover), Hemiptera, Agromyzidae), leaf miner (Liriomyza trifolii (Burgess), Diptera, Aphididae), whitefly (Bemisia tabaci (Genn.), Hemiptera, Aleyrodidae,) fruit borer (Helicoverpa armigera (Hub.), Lepidoptera, Noctuidae) and lady bird beetle (Coccinella septempunctata L., Coleoptera, Coccinellidae). Which constituted 3 species of order Hemiptera, 1 each of Diptera, Coleoptera and Lepidoptera, respectively. Jassid was present on the crop during the entire cropping season and remained available upto the crop maturity stage. Aphid was present on the crop almost during the entire cropping season and remained available upto crop maturity stage. Leaf miner was present on the crop during the entire cropping season and remained available upto the crop maturity stage. Whitefly was present on the crop during the fruiting stage and remained available upto crop maturity stage. Lady bird beetle predator was present on the crop from the reproductive stage and remained available upto the second week of February.