Objective: To compare the chemical constituents of volatile oil from roots

stems and leaves of Sarcandrae Herba

to reveal the pharmacodynamic differences of Sarcandrae Herba in different parts and provide scientific basis for its quality control. Method: The essential oil was extracted by stream distillation. The constituents were separated and identified by GC-MS. The relative content of each constituent was determined by area normalization method. Result: Fifty-two components of volatile oil were identified from different parts of Sarcandra glabra

thirty-three

forty-one and thirty-nine compounds from the roots

stems

and leaves of Sarcandrae herba were identified

accounted for 83.99%

83.85%

93.32%of total essential oil

respectively

of which twenty-four were same

while twenty-eight were different. Conclusion: The chemical constituents of volatile oils were quite different in kinds and main component content from the roots

stems

and leaves of Sarcandrae Herba.