Under the background of global change, the precipitation anomaly caused by climate change has an important impact on many ecological processes and functions. However, the current studies about the influence of extreme precipitation events on the composition and diversity of soil animal communities are extremely limited. From July 24 to 25, 2018, Liangshui National Nature Reserve experienced continuous rainfall characterized by heavy rain which was classified as extreme precipitation event (short-term rainstorm), with daily rainfall reaching 50-100 mm and causing relatively serious damage In this study, ground-dwelling beetles were captured by trap method in the prestorm (July 19-24), early stage (July 29-August 3) and late stage of the end of flooding (August 4-14) of Liangshui broad-leaved Korean pine forest in the study area. We aim to clarify the impact of short-term rainstorm on the composition and diversity of ground-dwelling beetle community. The results showed that 650 individuals belonging to 35 species of ground beetle community were captured inthe experiment. There was no significant difference in the number of individuals of ground-dwelling beetle community, carabidae and staphylinidae in the prestorm, early stage and late stage of the end of flooding. It indicated that short-term rainstorm had no significant effect on the number of individuals in the above communities, while the number of individuals of silphidae in the early stage of the end of flooding was significantly less than that in the prestorm and late stage of the end of flooding. Due to the different living habits of different groups of soil animal community, the effects of short rainstorm on different groups and dominant species of ground-dwelling beetle community are different. For example, the number of individuals of dominant species Pterostichus maoershanensis, Pterostichus adstrictus and Aulonocarabus canaliculatus in the early stage of the end of flooding was significantly less than that of individuals in the prestorm (P<0.05). The number of individuals of dominant species P.maoershanensis in the late stage of the end of flooding was significantly less than that in the early stage of the end of flooding and prestorm(P<0.01). The number of individuals of dominant species Nicrophorus tenuipes in the early stage of the end of flooding was significantly less than that in the prestorm(P<0.001). The diversity of species (H') and dominance index(D) of the ground-dwelling beetle community and Carabidae decreased gradually in the prestorm, early stage, and late stage of the end of flooding, and H', D and J in the late stage of the end of flooding were significantly less than those in the prestorm(P<0.05). The beta diversity of ground-dwelling beetle community in the early stage and late stage of the end of flooding was significantly higher than that in the prestorm, which presented that there was a high turnover or replacement of species in ground-dwelling beetles community in the early stage and late stage of the end of flooding, that is, the rainstorm caused a large difference in species composition of ground-dwelling beetle community. In conclusion, the short-term rainstorm had a certain effect on species composition and diversity of ground-dwelling beetle community in Liangshui broad-leaved Korean pine forest in Xiaoxing'an Mountains, and had different effects on different groups and dominant species of community, leading to larger species turnover of ground-dwelling beetle community after the rainstorm.