Heat evil gathering in the large intestine, easy to appear constipation, dry stool, pulse number, moss yellow and other symptoms, treatment should be to clear heat and detoxification. The Chinese herbal formulas that can be used to clear the fire in the large intestine include Dachengqi Tang, Xiao Chengqi Tang, Toning Stomach Chengqi Tang, and Ma Zi Ren Pills. 1. Da Cheng Qi Tang. It is composed of Houpu, rhubarb, Citrus aurantium, manganese, with the effect of clearing the accumulated heat in the large intestine and breaking up the accumulation, and can be used to treat abdominal distension, abdominal pain, restlessness, hot flashes and other conditions caused by the accumulation of heat in the large intestine. 2. Xiao Cheng Qi Tang. It is composed of three medicines: rhubarb, thick park and hedgehog, which have the effect of clearing heat in the large intestine, and can be used to treat the symptoms such as incontinence, abdominal distension and fullness caused by the light evidence of heat in the large intestine. 3. Regulate stomach and Cheng Qi Tang. It is composed of rhubarb, roasted licorice, manganite, with the effect of slowing down the heat knot and clearing heat in the large intestine, and can be used to treat the symptoms such as inability to pass stools, thirst and heartburn caused by accumulated heat in the large intestine. The adverse reactions and contraindications of the above drugs are not clear. If there is any discomfort, it is necessary to take the medicine correctly under the guidance of a professional physician.