During the course of postgraduate, Firstly the chromatographic fingerprint of Isatis indigotica Fort. , Rehmannia glutinosa Libosch. , Anemarrhena asphodeloides Bge. and Phragmites communis Trin. was established by High Performance Liquid Chromatography.According to the ralative rention times and the relative area resultants in chromatographic fingerprint, their comparative study was achieved. It established a chromatographic fingerprint method for indentification and quality assessment of Tradi...