To find environment-friendly and low pest resistance natural mosquitocide, The insecticidal activity of the essential oil extracted from fructification ofIllicium verumagainstAedes albopictusandCulex pipiens quinquefasciatuswere investigated. The compositions of this oil was analyzed by GC-MS. The results are given as follows, The 24-h LC50values ofIllicium verumessential oil for I, II, III, IV-instar larvae and pupa ofAedes albopictus/Culex pipiens quinquefasciatuswere 4.93/2.04, 8.36/2.96, 11.88/8.42, 16.10/13.13 and 42.31/75.12 μg·mL-1, re...