Objective: Study on chemical constituents from Aucklandiae Radix. Method: The chemical constituent was isolated on chromatograph of silica gel and HPLC

their structure were elucidated on the basis of spectra data. Result: Fourteen compounds were purified and their structure were identified as caryophyllene oxide ( 1 )

3β-acetoxy-9(11)-baccharene ( 2 )

3-filicanone ( 3 )

chrysophanol ( 4 )

dihydro-α-ionone ( 5 )

(E)-6

10-dimethyl-9-ethylidene-undec-5-en-2-one ( 6 )

(E)-geranylactone( 7 )

dehydrocostus lactone( 8 )

costunolide ( 9 )

α-costol ( 10 )

(-)-elema-1

3-11(13)-trien-12-ol ( 11 )

(3R

6S)-α-ionone-3-ol ( 12 )

β-ionone-4-one ( 13 )

(3R

6R)-α-ionone-3-ol ( 14 ). Conclusion: Compound 3

4

12

13

14 were isolated from Aucklandiae Radix for the first time.