Abstract: In order to explore the community composition and diversity of soybean moth pests in the central and western regions of Jilin Province, to monitor, early warning and comprehensive management of these pests, we investigated the moths communities of Lepidoptera by vertical-pointing searchlight-traps from 2017 to 2020 to reveal the composition, population source, harm way, population dynamics and community diversity. The results showed as follows:（1） There were 18 soybean moth species belonging to 7 families, Noctuidae was the main family, and the proportion of individual species was 50%. Population source consisted of overwintering, migration, overwintering and migration. Based on harm way, these species were divided into underground, borer and leaf-eating pests. The population dynamics of most abundant eleven species were analyzed.（2） The varied richness exhibited a discreet picking phenomenon. The index of richness in May and October were relative higher, while index of community diversity in August was relative higher than other moths. The evenness index was not significantly correlated with season. The community similarity was very high between May and June, while those were very low between October and other moths. The dominant species in different moths were confirmed. In conclusion, this study provides theoretical basis for community structure of soybean moth pests in the central and western regions of Jilin Province.