Scutellaria baicalensis, also known as Yuan Scutellaria, Baicalin, etc., is bitter and cold in nature and belongs to the lung, gall bladder and large intestine meridians. Its effects are as follows: First, it has the effect of clearing heat and drying dampness, commonly used for abdominal pain, pus and blood in stool, damp-heat dysentery with urgency and heaviness, in addition to hot gonorrhea, damp-heat gonorrhea with astringent painful urination. Secondly, it has the effect of diarrhea and detoxification, and is often used in patients with lung-heat cough, yellow, sticky phlegm, red tongue, sore throat and sores on the mouth and tongue. Third, cooling the blood to stop bleeding, can be used for bleeding from blood heat. Fourth, it has the effect of removing annoyance and calming the fetus, and is used for fetal heat disturbance. The contraindication of Scutellaria baicalensis is that this medicine is cold in nature and injures the spleen and stomach, so it is contraindicated in patients with a cold spleen and stomach or in patients with frequent diarrhea.