Abstract: Objective To make clear the taxis response of Lygus pmtensis to seven kinds of host plants.MethodThe taxis behavior of Lygus pmtensis to seven kinds of host plants was determined by Y-tube olfactometer and direct measurement.ResultThe selectivity of Lygus pmtensis on Chenopodium glaucum and Kochia prostrata was obviously higher than that of other five kinds of plants and selection response percentage were 64; and 63;, and the taxis degree reached significant level.The taxis degree on cotton was obviously higher than that on Brassica oleracea, Brassica chinensis and Convolvulus arvense and reached the significant level, selection response percentage were higer than 60;.There was no obvious difference between the cotton and Alfalfa.ConclusionHost plant volatiles play an important role in the selection of host plant Lygus pmtensis adult.