Grazing has an important effect on grassland ecosystem, and the effect varies with the grazing intensity and duration. The desert steppe ecosystem is fragile and sensitive to natural and human disturbance. Coleoptera is an indicator of environmental monitoring and biodiversity change. This study investigated the composition and diversity of beetle community in steppe at different grazing intensities using baited pitfall traps. The results showed that (1) the dominant groups were pegasidae, dionychidae and scarabaeidae. The common groups were silphidae, meloidae, enebrionidae and cetoniidae. (2) The increased grazing intensity was not conducive to maintaining more predatory insects. Control and lightly grazed plots maintained more carrion beetles. (3) The number of beetles decreased with the increase of grazing intensity. However, the community diversity was the largest in heavily grazed grassland and the smallest in lightly grazed grassland. Community dominance was significantly higher than that of lightly grazed grassland. The occurrence time and the peak quantity of each beetle group were different in different grazing intensity grasslands, and the dominance degree of the same habitat also changed with time. (4) The dominant groups of beetles in control, light and heavy grazing plots were different from other habitats, but all of them were similar to moderate grazing plots. The community structure of rare beetle groups in the lightly, moderately and heavily grazed areas was different from that of other habitats, but all of them were similar to that of the other habitats. (5) The number of individuals in beetle community was significantly positive correlation with species richness, coverage, average plant height, biomass. Shannon-wiener diversity index and Margalef richness index were significantly negative correlated with plant community species richness and biomass. The results can provide a reference for the protection of coleoptera diversity in the desert steppe.