A high-performance liquid chromatography （HPLC） method has been developed for the first time to simultaneously quantify the four active ingredients, namely aloha, baicalein, aloe-emodin and wogonin, in Dangguilonghui tablet. The marker compotmds were separated on the Diamonsil C18 column at a flow rate of 1.0 mL/min with a mobile phase of methanol-acetonitrile-0.3% aqueous phosphoric acid （220： 4： 200, v/v/v） and while the detection wavelength was set at 225 nm. The assay was linear over the range of 1.450 - 29.00 ug/mL （r = 0.9992） for aloin, 0.4050 - 8.100ug/mL （r = 0.9994） for baicalein, 0.1100 - 2.200 ug/mL （r = 0.9997） for aloe-emodin, 0.2160 - 4.320 ug/mL （r = 0.9991） for wogonin, respectively. The average sample recoveries at three concentration levels were 100.7% （RSD = 0.88%）, 101.0% （RSD = 0.89%）, 100.0% （RSD = 1.3%） and 100.1% （RSD = 1.1%） for these constituents, respectively. This method is suitable for the quality control of Dangguilonghui tablet.
