Stomach cancer is one of the common malignant tumors. It can occur in the cardia area, pylorus area and gastric body, and it mostly occurs in the pylorus area. According to surveys, the incidence of gastric cancer in our country has an upward trend, and it is more common in people aged 40-60 years old. The male to female ratio is about three times higher in males. Clinical manifestations include loss of appetite, nausea and vomiting, discomfort in the stomach area, pain, followed by palpable upper abdominal masses, dysphagia, food obstruction, black stool, hematemesis, anemia, progressive weight loss, etc.