Liriomyza sativae is a quarantine pest in China, which mainly harms eggplant, tomato, potato, pepper, melon, beans and other vegetables. Soaking leaves of larvae caused the greatest loss to host plants, destroying chlorophyll and mesophyll cells, delaying the development of plants and causing their death, resulting in reduced production, the severely damaged plants losing their commercial value and even leading to the failure of some vegetables and fruits. Control method: Before the 2nd instar (the wormway is very small), spray 2000 ~ 3000 times of 65,438+0.8% Aifuding EC, or 800 ~ 65,438+0,000 times of 40% Lvcaibao and 48% chlorpyrifos EC, or 98% Bataan powder 65,438+0. All localities should take different measures according to local specific conditions. It is best to use different single doses alternately to avoid increasing the resistance of pests. The commercial preparation of Bacillus thuringiensis can effectively reduce the harm of liriomyza sativae and has no killing effect on natural enemies.