Chemotherapy in Western medicine is one of the main methods for comprehensive treatment of malignant tumors, but chemotherapy plays an anti-cancer role while damaging the gastrointestinal mucosa, leading to a series of gastrointestinal dysfunction symptoms such as loss of appetite, nausea, vomiting, abdominal distension, abdominal pain, diarrhea or constipation to varying degrees, which in turn invariably weakens the nutritional status of patients and greatly reduces their survival quality. Modern research has found that chemotherapy-induced gastrointestinal reactions are due to excessive release of 5-hydroxytryptamine after peripheral or central stimulation. The application of 5-hydroxytryptamine receptor blockers for the treatment of chemotherapy-induced gastrointestinal reactions has been effective, but drugs for such problems are either expensive or ineffective, and chemotherapy-induced gastrointestinal reactions have become a major problem for doctors and tormented patients. According to Chinese medicine, chemotherapy-induced gastrointestinal reactions are mainly due to the control of the spleen and stomach by chemical drugs (poisonous evil), and the malfunction of the middle jiao in transporting and transforming, so that the spleen qi does not rise and the stomach qi does not descend. The problem can be solved by taking ear points for the spleen, stomach, Shen Men and liver. The doctor holds a matchstick and presses the patient’s ear points of spleen, stomach, Shen Men and liver repeatedly with moderate force one by one to find out the most painful and distended point for a mark. Patients are instructed to press the adhesive tape 3 to 5 times a day with their own hands, for about 10 seconds at each point, to the extent of local heat, swelling and pain. The procedure is applied alternately to the left and right ear once every 3 days, 15 times a course of treatment. Chinese medicine considers the auricular points to be the parts of the body where the skin surface of the ear communicates with the internal organs, meridians, tissues, organs, and all the bones of the limbs, as well as the place where the pulse qi is infused. The auricular points selected in the formula, Spleen and Stomach, have the function of regulating the middle jiao, harmonizing the spleen and stomach and regulating qi and lowering rebellion; Shen Men has the function of calming, tranquilizing and stopping vomiting; Liver can regulate the emotions, smooth the qi flow and harmonize qi and blood. Raw Wang Bu Liu Xing seeds are also known as “milk rice”; “Wang Bu Liu”; “Mai Lan Zi”; “She Jian Zi”; “It is a commonly used medicine for auricular acupressure. Using them to apply pressure at the above auricular points using their hard stimulation and their own medicinal effects, and the selected auricular points complement each other, together they can play the role of tonifying qi and blood, calming and tranquilizing the mind, lowering rebellion and stopping vomiting, and finally achieving the purpose of relieving gastrointestinal reactions. The method is simple, effective and inexpensive, so it is worth promoting.