Abstract: In order to control tobacco virus diseases more effectively, the experiments on spraying mixed chemicals (1.5% Traconlyl alcohol at a dilution of 800 + amino acids fertilizer at a dilution of 300 and Moroxydine at a dilution of 1000 + Baode microbial fertilizer at a dilution of 1000) and virucides (Duxiao at a dilution of 800 and 1.5% Moroxydine at a dilution of 800) were carried out in tobacco fields in 2003.The results indicated that during full occurrence stage of the diseases, the control effects of Traconlyl alcohol at a dilution of 800 + amino acids fertilizer at a dilution of 300 were 72.50% and 64.18% and Duxiao at a dilution of 800 were 64.61% and 57.21% at Hongta district in Yuxi and experimental point in Huaning County, respectively.The control effects were relatively good.