When patients have their stomach cardia removed due to certain diseases, in order to prevent gastric reflux, patients can achieve the purpose through reasonable diet, appropriate activities and medication. 1. Reasonable diet: patients who have had their stomachs removed should eat more light and easy-to-digest foods to minimize the stimulation of food to the stomach, and at the same time, they should eat less and more often to avoid overeating and drinking in order to prevent the reflux of gastric contents. 2. Appropriate activities: after meals, patients should take appropriate walks, stand upright and other activities to promote the digestion of food, and avoid strenuous exercise to prevent the reflux of gastric contents. 3. Medication: patients with cardia resection can also take domperidone tablets, mosapride citrate tablets, metoclopramide tablets and other medicines to improve the function of gastrointestinal tract in order to prevent reflux of gastric contents. If patients experience frequent reflux after cardia resection, it is recommended to go to the hospital for timely treatment.