Objective To analyse the contents of indicum L.. Methods Chlorogenic acid from the chlorogenic acid from the leaves and flowers of Chrysanthemum leaves and flowers of Chrysanthemum indicum L. was extracted by the method of ultrasonic extraction with 70% ethanol and analysed by RP-HPLC at the wavelength of 327 nm with the flow rate of 1.0 mL/rain and the mobile phase 0.04% H3PO4-acetonitril with gradient elution. Results The contents of chlorogenic acid from the leaves and flowers of Chrysanthemum indicum L. were 1.88% and 0. 770%, respectively. Conclusion The content of chlorogenic acid from t...