Abstract:Objective: To establish the HPLC fingerprint of the pieces of Radix Alangii Preparata. Method: Using the high performance liquid chromatography,the chromatographic column was Alltech Apollo C18 (4.6 mm × 250 mm, 5 μm) and acetonitrile-buffer (buffer: 0.2 g heptane sulfonate, 3.5 g potassium dihydrogen phosphate volume to 1 000 mL)was selected as mobile phase gradient elution were adopeted. Result :Established HPLC fingerprint of R Alangii Preparata, and the results of methodological studymet the technical requirements for fingerprinting. Conclusion: The method is stable, accurate, and reliable, to provide a scientific basis of quality control standard for the R.Alangii Preparata.