Seven compounds (1-7) were isolated from n-hexane and EtOAc-soluble fractions of the roots of Erigeron annuus by repeated silica gel column chromatography. They were identified as simiarenol (1), ${eta}$-sitosterol (2), daidzein (3), apigenin (4), apigenin 7-O-${eta}$-D-glucuronide (5), 3-hydroxy-pyran- 4-one (6), and ${eta}$-sitosterol glucoside (7) on the basis of physical and spectroscopic data. Compounds 1 and 3 were isolated for the first time from the Erigeron species.