Diarrhea is a common disease in Chinese internal medicine. As early as 2,000 years ago, it was recorded in the Yellow Emperor’s Classic of Internal Medicine that “when clear qi is below, it produces supper and drainage; when turbid qi is above, it produces distension”, and later medical practitioners have also discussed it. Professor Guo Xijun in the course of many years of clinical process has accumulated a wealth of experience in the treatment of diarrhea, the main points are described below. 1, external diarrhea, focus on dispelling dampness external diarrhea, to feel dampness, damp-heat evil mainly. External cold and heat of the evil injury, or warm, or clear, the evil can go quickly. But the wet nature of heavy, sticky, hot and cold evil with dampness, if you respect the “Nei Jing” “cold hot, hot cold” method, every cause of diarrhea lingering difficult to cure. Clinical treatment of this diarrhea Professor Guo Xijun advocates the main focus on dampness, especially for damp-heat combination of evil and diarrhea patients, dampness is particularly important, this is the former “wet to heat alone” is said. The ancients, according to the dampness in the upper, middle and lower jiao parts of the different, and the establishment of dampness, dry dampness, dampness three methods. The dampness of diarrhea is mainly in the middle and lower jiao, so its treatment should be mainly dry dampness and dampness, and the specific preference for dryness or benefit, should be selected according to the patient’s clinical performance. If the patient has frequent discharge, thin stools, or even watery discharge, the main treatment should be dampness, with medicines such as Che Qian Zi and Yun Ling, so that the dampness can go away from the stool, which is what the ancient people called “benefit the small stool to the large stool”; if the patient has diarrhea and also sees the image of dampness blocking the middle jiao, such as distension and fullness of the abdomen and body, the main treatment should be dampness, with medicines such as Atractylodes Macrocephalae, Chen Pi and Radix Panaxiae If the patient also sees dampness blocking the middle jiao, the medicine should be mainly used to dry dampness, such as Cang Zhu, Chen Pi and Pan Xia, so that the dampness is dispelled from the middle jiao and the diarrhea will be cured. 2, internal injury diarrhea, taking into account the spleen and kidneys The treatment of diarrhea by doctors in the past generations has attached much importance to the role of the spleen and stomach in diarrhea. On the basis of evidence-based treatment, the spleen and stomach are always taken care of, and four herbs of yam, barley, lentils and lotus seeds are often added to the main formula. These four herbs are from the “Bureau of Recipe” Ginseng Ling Bai Zhu San, all of which have a sweet taste and are able to strengthen the spleen and nourish the middle. In the treatment of internal diarrhea, Prof. Guo Xijun has added these four ingredients to his treatment of internal injuries and has obtained good results every time. If the diarrhea is not treated for a long time, it will damage the kidney yang and cause the five-shift diarrhea, which is characterized by early morning diarrhea, as the ancients said, “If the yang in the kidney is insufficient, the fire in the vital gate will fail, and the yin cold will only flourish. 3, nourishing the spleen, softening the liver, and regulating the emotions, ancestral medicine has always attached importance to the role of the emotions in causing disease, and discussions on the emotions leading to diarrhea have already been discussed in ancient times. Miscellaneous evidence of the Mol” records; “gas discharge evidence, where the anger diarrhea, must be held in anger when the food, resulting in injury to the spleen and stomach”. In modern society, with the intensification of various competitions, people’s mental pressure is getting bigger and bigger, and there are more and more clinical cases of diarrhea due to emotional disorders. Emotional and mental disorders cause liver wood to multiply the spleen, and the spleen loses its healthy movement, resulting in diarrhea. The symptoms of this kind of diarrhea are: intestinal tinnitus and abdominal pain, diarrhea in the stool, abdominal pain before discharge, and pain reduction after discharge, which is called painful discharge in Chinese medicine, and also called irritable bowel syndrome in Western medicine. In the treatment of this kind of diarrhea and pain, we mostly use the key formula of pain and diarrhea, plus Buddha’s hand, aromatic herb and other products to regulate the emotions, the efficacy is precise. The modern pharmacological research shows that the extracts of Forsythia and Aromatic Herb can antagonize the effects of histamine and acetylcholine, thus inhibiting the peristalsis of the gastrointestinal tract, which can relieve the diarrhea caused by irritable bowel syndrome. The formula is Ginseng and Atractylodes Macrocephalae plus or minus. In the process of clinical evidence, on the basis of diagnosis and treatment, prescriptions and medicines are combined with the results of the auxiliary examination of Western medicine, and the treatment of diarrhea is no exception. If the intestinal mucosa is congested, edematous and inflammation is obvious in the colonoscopy, we often add drugs such as Fructus spp. If the intestinal polyp is seen in the colonoscopy, often add Danshen, Curcuma and other blood circulation products, also often add a raw barley, barley is sweet and light, can strengthen the spleen, permeate dampness, stop diarrhea, for the treatment of diarrhea, modern pharmacological research also proved that barley has a certain anti-cancer, the role of prevention of precancerous lesions, to prevent polyp malignant, has a certain role; such as routine examination of the major disease seen in red blood cells, occult blood positive, often add Bletilla, The blood is often added to stop the bleeding and promote the muscle, such as pediatric tea, Panax ginseng powder.