Abstract:Objective: To study the chemical constituents of Geranium eristemon. Method: Chromatography and spectral analysis were used to isolate the constituents and elucidate their structures. Result: Five compounds were isolated from acetone extract of the whole grass of G. eristemon, and identified as β-sitosterol, protocatechuic acid, myricetin, kaempferol-7-O-α-L-arabifura-noside and kaempferol-3-O-α-L-arabifuranoside. Conclusion: kaempferol-7-O-α-L-arabifuranoside and kaempferol-3-O-α-L-arabifu-ranoside were isolated from G. genus for the first time.