Objective : To study the chemical constituents of Clematis armandii. Method: The constituents were separated and purified on the chromatography of silica gel

Sephardex LH20 and RP silica gel; their structures were elucidated on the spectra data. Result: Eleven compounds were identified as siderin (1)

epipinoresinol (2)

pinoresinol (3)

(+)-2-(3

4-dimethoxyphenyl)-6-(3

4-dihydroxyphenyl)-3

7-dioxabicyclo octane (4)

matairesinol (5)

lariciresinol (6)

justieiresinol (7)

syringaresinol (8)

liriodendrin (9)

tachioside (10)

koaburaside (11). Conclusion: Ten compounds were isolated from C. armandii for the first time except compound 9.