Abstract: The studies on the enhancive effects of 5% hexaflumuron and 10% imidacloprid adding different concentrations of bamboo vinegar on controlling Spodoptera litura larvae at 1~2 instar and Empoasca flavescens respectively were conducted in the field of cotton and tea. The results indicated that 5% hexaflumuron adding bamboo vinegar which was diluted with water into 400 times solution has significantly promotional effects on controlling Spodoptera litura larvae at 1~2 instar on 7 days after application , and the efficiency by application of half of recommendation dose of 5% hexaflumuron was the same as that by application of recommendation dose. 10% imidacloprid adding bamboo vinegar diluted by 400 times have significantly promotional effects on controlling Empoasca flavescens on 1, 3, 7 and 11 days after application, and the efficiencies by application of half of recommendation dose of 10% imidacloprid were the same as that by application of recommendation dose on 1 and 3 days after application. But the promotional effect of adding bamboo vinegar diluted by 600 times was significant only on 1 day, and not significant on 3, 7 and 11 days after application.