Abstract: In order to understand the external characteristics of the antennae and sensilla of Aphis glycines Matsumura,scanning electron microscope was used to observe antennal morphological characteristics of winged soybean aphid,which include the type,morphology,quantity and distribution of antennal sensilla,etc.The result showed that the antennae of winged aphid were filamentous,and were composed of scape,pedicel and flagelum.The flagelum was composed of four subsegments.A total of six kinds of sensilla were discovered,includeing placoid sensillum,coeloconic peg,trichoid sensillum typeⅠ,trichoid sensillum typeⅡ,campaniform sensillum,and peripheral scolopidia,respectively.Furthermore,the functions of various types of the antennal sensilla were analyzed and predicted for the winged soybean aphid.