The term “digestive system” is a Western medical term, while Chinese medicine generally refers to the digestive system diseases as “spleen and stomach diseases”. Chinese medicine attaches great importance to the spleen and stomach. The ancient saying of Li Dong Yuan, a famous physician, “If you have stomach energy, you will live; if you do not have stomach energy, you will die” emphasizes the importance of the spleen and stomach in human life activities. The importance of the spleen and stomach is closely related to their functions. The spleen is responsible for transporting and transforming the blood, while the stomach is responsible for receiving and decomposing it. The two coordinate with each other to complete the digestion, absorption and distribution of water and grain, and are called the “source of the postnatal” and the “source of biochemical energy and blood”. In layman’s terms, all the nutrients needed for human growth and development are digested and absorbed by the spleen and stomach, and all the five organs and six bowels of the body need the nutrients digested and absorbed by the spleen and stomach as energy and power to maintain normal function. If there is a problem with the function of the spleen and stomach, symptoms such as loss of appetite, gastric distention and even pain, nausea, acid reflux, heartburn, hiccups, abdominal distention, inability to pass stools or diarrhea, etc., will occur, and long-term digestive and absorption dysfunction will lead to malnutrition and anemia, and the function of other internal organs will also be affected. According to Chinese medical theory, the occurrence of spleen and stomach diseases is closely related to poor diet, emotional disorders and climate change. Bad eating habits such as eating unhygienic food, being too hungry and too full, and being addicted to spicy and greasy food may cause vomiting, diarrhea, bloating, stomach pain and other spleen and stomach diseases. The liver and the spleen and stomach are especially closely related. Emotional disorders often cause liver discomfort, resulting in symptoms such as chest tightness, fullness of the two sides, and frequent tai-hui, etc. If liver discomfort affects the spleen and stomach, there will be no desire to eat, stomach distension and burping after meals. Climate change can also easily cause or induce spleen and stomach diseases, such as common duodenal ulcers in the autumn, winter and spring seasons is a good example. Therefore, having a good diet and psychological state in life, as well as paying attention to cold and warmth, is very meaningful to prevent the occurrence of spleen and stomach diseases. Chinese medicine is very advantageous and characteristic in treating spleen and stomach diseases. For chronic gastritis, peptic ulcer, diarrhea, constipation and other common diseases of the digestive system, according to the different manifestations of the disease, identify the evidence and select the prescriptions, based on the principles of eliminating food and draining stagnation, relieving depression, dispersing cold and harmonizing the stomach, etc., and treat with formulas such as Rizhong Pill, Baohe Pill and Chaihu Dredging Liver San, which can achieve better results. In addition, there are various treatments such as acupuncture and cupping that can be used for the treatment of spleen and stomach diseases.