OBJECTIVE: To establish the method for simultaneous determination of glycyrrhizic acid, salicin, glycyrrhetinic acid, chenopodium, paeonol, imperatorin and isoimperatorin in Fengshiding tablet. METHODS: HPLC-CAD method was adopted. The determination was performed on Thermo Hypersil BDS C18 column with mobile phase consisted of acetonitrile-10 mmol/L ammonium formate (pH value adjusted to 4.5 using formic acid, gradient elution) at the flow rate of 1.0 mL/min. The column temperature was set at 35 ℃. CAD atomizer temperature was 35 ℃, and air pressure was (59.6±0.1) psi. The detection frequency was 10 Hz, and sample size was 20 μL. RESULTS: The linear range of glycyrrhizic acid, salicin, glycyrrhetinic acid, chenopodium, paeonol, imperatorin and isoimperatorin were 0.42-16.80, 0.28-11.20, 0.16-6.20, 0.98-39.40, 1.02-41.00, 0.11- 4.40, 0.10-3.80 μg/mL(r≥0.999 1), respectively. The detection limits were 0.03, 0.02, 0.02, 0.03, 0.03, 0.02, 0.02 μg/mL, respectively; quantitation limits were 0.11, 0.06, 0.06, 0.10, 0.11, 0.08, 0.07μg/mL, respectively. RSDs of precision, stability (48 h) and reproducibility tests were all lower than 2.0% (n=6 or n=7). Average recoveries rate were 98.61%-99.76%, and RSDs were 1.11%-1.51% (n=6). CONCLUSIONS: The established method is simple, sensitive, accurate, and can be used for simultaneous determination of glycyrrhizic acid, salicin, glycyrrhetinic acid, chenopodium, paeonol, imperatorin and isoimperatorin in Fengshiding tablet.