Abstract: 【Objective】 Many Styrax spp. are widely distributed in China. Analysis of the floral constituents of different Styrax spp. in different periods is beneficial to determine the main floral components and chemical structure of Styrax spp. and to provide a theoretical basis for the utilization of their flowers. 【Method】 In this experiment, headspace solid phase microextraction(HS-SPME)and gas chromatography-mass spectrometry(GC-MS)were used to detect the floral components in the flower bud, full blossom, and final flowering stages of six species. 【Result】 Terpenes were the main constituents of the floral components of six Styrax spp. The terpenoids detected at different flowering stages were generally the same. At each flowering stage, the highest content of terpenes in S. japonicus was germacrene-D, which was significantly higher than that in other tree species. The terpene present at the highest level in S. grandiflora and S. calvescens was α-pinene, and the relative content of α-pinene in S. calvescens was significantly higher than that in other tree species; The highest content of terpenes in S. odoratissimus, S. dasyantha, and Styrax faberi var. faberi was basilene, and the relative content of basilene in S. faberi var. faberi was significantly higher than that in other tree species. The relative content of verbenone in S. grandiflora, of caryophyllene and α-rhedene in S. faberi var. faberi, of(E)-β-ocimene in S. odoratissimus, and of α-isoterenene in S. calvescens was higher than that in other tree species. 【Conclusion】 Many kinds of floral components are present in Styrax spp., among which, terpene compounds are the most abundant.