Abstract:The effects of tobacco plants inoculated with CMV, TMV and CMV+TMV on the growth and reproduction of Myzus persicae (Sulzer) were studied at 25±0.5℃, RH 75% ±5% and L∶ D=14∶ 10. The development and reproduction of M.persicae differed significantly between health tobacco plants and plants inoculated with viruses. When the aphids were reared on leaf discs of health tobacco plants, plants inoculated with CMV, TMV and CMV+TMV respectively, the nymph stage was 6.04, 6.26, 6.79 and 8.04 days, the nymph survival rate was 75.71%, 55.84%, 70.59% and 32.00%, the total reproduce abundance per female was 22.44, 6.35, 4.99 and 5.49, and the intrinsic rate of increase was 0.23, 0.17, 0.15 and 0.11 respectively. The tested aphis is suitable to grow and develop on healthy tobacco plants, but plants inoculated with virus will restrain the growth of its population, especially on the plants inoculated with CMV+TMV.