[Aim] Spodoptera frugiperda is a migratory pest that causes serious agricultural damage. The aim of this study was to clarify the type, ultrastructure, and distribution of antennal sensillae of S. frugiperda.[Method] The type and distribution of antennal sensillae were observed using scanning electron microscopy.[Result] The antennae of both sexes of S. frugiperda consisted of three parts:the pedicel, scape, and flagellum. The antennae of males were slightly longer than those of females, and the surface of the antennae was covered with many scales. Seven types of sensilla were identified from the antennae of male and female moths, including B hm bristles, sensilla trichodea, sensilla chaetica, sensilla basiconica, sensilla coeloconica, sensilla styloconica and sensilla squamiformia. B hm bristles were mainly found in the pedicel and scape, while the rest were distributed in the flagellum.[Conclusion] Both sexes of S. frugiperda had the same types of antennal sensilla; however, the length of similar sensilla was significantly longer for males than females. Whether this specialization and difference are conducive to its function need to be confirmed using electrophysiological techniques.