Li Mou, female, 59 years old, May 6, 2011 first consultation. The patient has low fever for more than two months, in a township health center treatment for more than a month, the symptoms did not see obvious improvement, so he consulted a famous old Chinese medicine practitioner in Anhui Province, Yang Congxin, carve out a diagnosis: bitter mouth, low fever, fear of cold, mouth ulcers, poor mental health, fatigue and weakness, tongue pale red moss white, pulse string weak. The history of the disease, the first external infection, fever and malignant cold, a few days later appeared bitter mouth and dry throat, fatigue and weakness, poor energy, nausea and vomiting. Give small chaihu soup plus reduction, prescription: chaihu 15 grams, 12 grams of scutellaria baicalensis, the system of half-sia 10 grams, 10 grams of sun-dried ginseng, 10 grams of ginger, 4 jujube, 20 grams of dazao root, 15 grams of bean root, 20 grams of honeysuckle, 15 grams of forsythia, 15 grams of radix peony, 12 grams of danshi, 15 grams of pericarp, 6 grams of licorice. 5 dosages, 1 dose per day, decocted with water, divided into 2 morning and evening warm service. May 12, the second diagnosis: after the medicine self-test body temperature has been reduced, but still feel low fever, poor nutrition, tongue light red, moss white, pulse string weak. Give the above plus fried grain malt 15 grams, fried chicken gold 20 grams. 5 doses, decoction. May 18, third diagnosis: the patient complained of no significant improvement in symptoms, still sleepy and tired, low fever, cold, poor, hot and cold, pale red tongue, white moss, weak pulse. The evidence of the sun and Shaoyang disease, the formula with Chai Hu Gui Zhi Tang Plus Reduction, prescription: 20 grams of Chai Hu, 12 grams of Semenxia, Scutellaria baicalensis 15 grams, 12 grams of American ginseng, 10 grams of ginger, 4 jujubes, 6 grams of Glycyrrhiza glabra, 12 grams of Gui Zhi, 12 grams of Paeonia lactiflora, 20 grams of Ge Ge Root, 12 grams of Pericarpium Citriodis, 15 grams of Phellodendron Bark, 15 grams of cloud ling. 7 doses, 1 dose per day, boiled water to take. On May 26th, the fourth diagnosis, the patient complained that there is no low-grade fever, food increased, the spirit has improved significantly, in order to consolidate the treatment, give the above to go to the thick park, add 20 grams of roasted astragalus, in order to enhance the positive qi. According to: low fever is a common clinical disease, mostly by the evil invasion of the human body, and the body’s positive qi struggle, if the positive can win the evil will sweat out the heat, such as the positive does not win the evil, the disease for the advancement of the sweat is still feverish. Most of the first external evil in the table stage by the sweat to solve the, if the external infection five or six days of positive qi still can not protect the evil out, as the so-called “blood weak gas exhaust, the coupling open, the evil due to the entry, and the positive qi wrestling, knotted in the coercion,” the emergence of the cold and heat, chest and hypochondriac bitter fullness, do not want to eat, heartburn like nausea and other symptoms. The formula emphasizes the use of Chai Hu and Scutellaria to dispel the evil, so that the half-expression, half-lii evil can be dissolved from the outside. Half-summer and ginger can strengthen the stomach and stop vomiting; ginseng, roasted licorice and jujube support the positive to fight against the evil. After the second diagnosis, the patient still has low-grade fever and malignant cold, which is the evidence of the sun has not been removed. Therefore, cinnamon sticks, white peony, Pueraria lobata were used to relieve the symptoms. Relative medicine and evidence, the disease was cured.