Chronic diarrhea belongs to the category of diarrhea in Chinese medicine, with recurrent episodes of diarrhea as the main symptom, often accompanied by abdominal pain, bowel sounds, mucus stools, etc., and involves a variety of related diseases, such as chronic colitis, proctitis, Crohn’s disease, intestinal dysfunction, irritable bowel syndrome, indigestion and intestinal flora dysbiosis. The disease is often recurrent, sometimes severe and sometimes mild, and has a long duration. Chinese medicine believes that this disease is mostly caused by spleen deficiency and loss of transportation. The causes of spleen deficiency are: 1. congenital deficiency, weak transport function; 2. acquired loss of nourishment, including excessive fatigue, diet disorders, resulting in injury to the spleen and stomach, and in the long run, the righteousness is damaged. Weak spleen qi inevitably affects the distribution of water and grain essence, which will further adversely affect the overall physiological function of the person, such as anemia, malnutrition and decreased immunity. Chinese medicine believes that spleen deficiency over time, the loss of nourishment, resulting in kidney deficiency; transportation and transformation disorders, can lead to earth congestion and wood depression and other evidence. The role of food therapy in the treatment of diarrhea: Since ancient times, generations of doctors have emphasized the role of food therapy in the treatment of diarrhea. It is believed that medicine and food have the same origin, and many varieties of Chinese medicine are themselves food. Medicine can be taken, but it cannot be used all day long; while food must be taken day by day, not to be enjoyed; besides, diarrhea has a close relationship with diet, and the condition of diet directly affects the changes of the disease. Careless diet will often aggravate the disease, but those who pay attention to diet and carefully deploy it will easily heal or become lighter. It is often said that the disease needs to be treated in three parts and nourished in seven parts, and nourishment includes labor and rest, emotion and diet, such as yam, barley, lotus seeds, winter melon, lentils, amaranth, ginger, dates and so on, which are good food therapy. Yam is also food and vegetables, spleen and stop diarrhea, with the characteristics of tonic but not stagnant, nourishing but not greasy, especially suitable for the weak middle-aged and elderly. Job’s tear is a kind of grain, is a good food therapy, has the effect of strengthening the spleen and dampness, can be cooked porridge, long-term consumption, it is recommended that the barley can be fried first before use. Lotus seeds are traditionally considered by the people as a tonic, which can strengthen the spleen and stop diarrhea. The three can be eaten together. Lentils can nourish the spleen and detoxify dampness, and winter melon has the effect of clearing heat and dampness p benefitting qi. Winter melon and lentils are vegetables and can be eaten frequently throughout the seasons. Of course, for the patient’s condition, seasonal changes, food therapy products should be focused. For example, in summer, when there is a lot of heat and humidity, winter melon is available in large quantities and can be eaten in large quantities to benefit dampness and clear heat. Amaranth is a well-known wild vegetable that has the effect of clearing heat and detoxification. In spring and summer, patients with chronic diarrhea who have acute attacks and pus and blood in the stool due to the change of seasons can take fresh Amaranthus as porridge along with medicine. In autumn and winter, people who are afraid of cold in the abdomen can put more ginger and garlic in their dishes or cook with ginger porridge, which has the effect of warming the middle and dispersing cold. Jujube is a popular fruit, and it is better to cook porridge with dried products to benefit qi and blood.