OBJECTIVE: To study the taxonomy of Caprifoliaceae. METHOD: Using chemotaxonomical methods to discuss the distribution characteristics of chemical constituents in Caprifoliaceae family. RESULTS: Iridoids and flavonoids were confirmed as the characteristic constituents of Caprifoliaceae family. CONCLUSION: Though there are great deviations among the genera of Caprifoliaceae family, it is not recommended to separate genus Sambucus and genus Viburnum from Caprifoliaceae family.