Abstract: Body surface volatiles are important pheromones for individual communication among insects. Cyrtotrachelus buqueti, a pest in cluster bamboo forests, seriously limits the development of bamboo products and adversely affects the income of bamboo farmers in south of China. In this study, gas chromatography-mass spectrometry (GC-MS) technology and headspace sampling method were used to detect and analyze the volatile components on the surface of C. buqueti, providing scientific basis for controling the pest population. The results showed that a total of 28 compounds were detected inc 23 males and 23 females. GC-MS technology was also used to analyze the daily variation and ten-day variation of the volatiles on the body surface of C. buqueti. The results showed that (Z)-9-Tricosene and Heneicosane existed in the main volatiles of female insects throughout August, and the relative content of Heneicosane showed a downward trend from the first ten days to the second ten days, and the daily changes were basically the same, showing an increase first and then a decrease. Nonadecan, a male body surface volatile, existed in the whole August, and the relative content increased from the first ten days to the middle ten days and decreased in the last ten days. In summary, combined with the living habits of C. buqueti, it could be speculated that (Z)-9-Tricosene, Heneicosane and Nonadecan played a vital role in C. buqueti communication. These results also established a theoretical foundation for the development of C. buqueti pheromone.