According to the efficacy of rhubarb, rhubarb can relieve situs sores. However, the effect of a single Chinese medicine is weak, and other medicines can be used together under the guidance of Chinese medicine practitioners to achieve the best therapeutic effect. Sitting-board sores are sores on the buttocks. The manifestation of the buttocks red itchy skin, or corn-like pimples, or even buttocks red, swollen, hot and painful, itching and intense, and ultimately ulcerated running water. Mostly because of sitting for a long time in the hot and humid place, or summer sitting in the sun for a long time in the place, so that the summer heat and humidity, stagnation in the buttocks and the onset of the disease. The treatment is appropriate to relieve wind and stop itching, clear heat and cool the blood. Rhubarb, bitter flavor, cold nature. Attributed to the spleen, stomach, large intestine, liver, pericardium meridian. It has the effects of diarrhea and attacking stagnation, clearing heat and fire, cooling the blood and detoxifying the toxin, expelling blood stasis and clearing the meridians, inducing dampness and eliminating yellowish color. Clinically, it is often used in treating constipation due to stagnation of damp-heat, epistaxis due to blood-heat, carbuncle, carbuncle in the intestines (carbuncle occurring in the intestines and bowels, manifested by fever, pain in the right side of the abdomen, and palpable lump), abdominal pain, menstrual occlusion due to stagnation of blood and stagnation of stagnation of the menstruation, postpartum stagnation, bruise, dysentery due to heat-dampness, and jaundice with redness in the urine. If there is discomfort, it is recommended to actively consult a physician, under the guidance of the physician to standardize the use of medication, not self-medication, so as not to delay the condition.