OBJECTIVE To perform content determination and fingerprint research for Diphylleia sinensis and its adulterant sixangular Dysosma rhizome,and define the characteristic peaks. METHODS Thin layer identification and content determination were performed,and fingerprints were established for Diphylleia sinensis and its adulterant sixangular Dysosma rhizome. RESULTS Of then 10 batches of medicinal materials,Diphylleia sinensis from Hubei had the highest contents. Six characteristic peaks defined by fingerprints:b...