Trails of the convergence ladybird negatively affected the brown citrus aphid population. On 3 days after treatment of ladybird trails, the population growth rate of the brown citrus aphid on treatment and control swingle flushes in the test tube were –0.1848 and –0.0385, respectively. In pot experiments, there were no significant differences in population growth rates between treatment and control swingle plants on 3 and 7 days after treatment of ladybird trails. But, on 10 days after treatment, each population growth rate was -0.0415 and 0.1125, respectively so there was significantly different statistically. Thus, our result support the potential practical application of ladybird trails as an effective control agent for managing of herbivorous insect pests in citrus groves.