Stomach cancer is one of the common malignant tumors. It can occur in the cardia area, pyloric area and gastric body, and it often occurs in the pyloric area. According to surveys, there is an upward trend in the incidence of stomach cancer in China. It often occurs in people aged 40-60, and the incidence in men is about three times higher than that in women. The clinical symptoms include loss of appetite, nausea, vomiting, discomfort in the stomach, pain, then a lump in the upper abdomen may appear, as well as hiccup, reflux, food obstruction, black stool, hematemesis, anemia, progressive weight loss, etc.