黄芩,为唇形科植物黄芩ScutellariabaicalensisGeorgi的干燥根,味苦,性寒,具有清热燥湿,泻火解毒,止血,安胎等作用。《本经》载其“主诸热黄疸,肠氵辟泄痢,逐水,下血闭,恶疮疽蚀火疡”。《别录》言“疗痰热,胃中热”。《本草纲目》谓其“治风热、湿热、头痛、奔豚热痛、火咳肺? Astragalus membranaceus, a dry root of the Lamiaceae plant Astragalus Scutellariabaicalensis Georgi, is bitter, cold, has heat and dampness, purging fire, detoxification, hemostasis, and tocolysis. The “Ben Jing” contains “the main heat of the Yellow Emperor, the diarrhea of ​​the intestines, the discharge of water, the closing of the blood, and the destruction of the evil ulcers.” “Do not record” words “treatment fever, stomach heat.” “Compendium of Materia Medica,” said that it "regulates wind-heat, heat, headache, hot dominoes, hot cough and lungs?