A method to control quality of Xieriga Siweitang capsules was developed.TLC was used to identify golden cypress, Gardenia, Curcuma, caltrop in Xieriga Siweitang capsules, HPLC was used to assay the content of hydrochloric berberine in Xieriga Siweitang capsules, the chromatog. column was Kromatosil C18, the mobile phase was acetonitrile:0.3 mol/L sodium dihydrogen phosphate:phosphoric acid (35:65:0.08), the detective wavelength was 265 nm, and the flow rate was 1.0 mL/min.The TLC identification was highly specific with clear spots.The average recovery rate of hydrochloric berberine in the capsules was 96.5% with RSD of 1.6% (n = 9).The method may be used to identify the quality and quantity of Xieriga Siweitang capsules.