Objective: To investigate the chemical components of Thesium chinense. Method: Various column chromatography methods were used to isolate and purify the compounds from 95% ethanol extracts of T. chinense

and their structures were identified by physico-chemical and spectral analysis. Result: Ten compounds were isolated from T. chinense and identified as luteolin-7-O-glucoside (1)

apigenin-7-O-glucoside (2)

rutin (3)

apigenin-8-C-α-L-arabinopyranoside (4)

homoplantaginin (5)

pectolinarin (6)

linarin (7)

apigenin-7-O-β-D-glucopyranuronide (8)

chrysoeriol 7-O-glucuronide (9) and chrysoeriol (10). Conclusion: Compound 10 was isolated from the genus Thesium for the first time and compounds 4-9 were isolated from the family Santalaceae for the first time.