Objective: To study the non-alkaloid constituents of Buxus sinica. Method: The compounds from ethyl acetate and n-butanol fractionsof B. sinica were isolated byvarious chromatographic techniques including MCI gel

normal phase silica gel

RP-18 Silica geland Sephadex LH-20.The structures were identified by their physical-chemical properties and spectroscopic analysis. Result: Ten compounds were isolated and identified as 4'

5-dihydroxy-3

3'

6

7-tetramethoxyflavone(1)

4'

5-dihydroxy-3

6

7-trimethoxyflavone(2)

3'

4'

5-trihydroxy-3

6

7-timethoxyflavone(3)

pinoresino(4)

3'-O-demethylepipinoresionl(5)

4-hydroxy-3-methoxycinnamic acid methyl ester(6)

methyl-4-hydroxycinnamate(7)

cleomiscosin A(8)

syringin(9) and isolariciresinol-4-O-β-D -glucopyranoside(10). Conclusion: Compounds 1

4-7

and 9-10 were isolated from this plant for the first time.