Who should be alert to the occurrence of stomach cancer and take the initiative to go for gastroscopy? It is widely recognized that if any of the following groups of people have one of these conditions, it is recommended to have an annual gastroscopy as early as possible: 1. 2.Patients with gastric cancer or other digestive tract cancers in their family. 3.The original acid reflux and heartburn, but now the symptoms suddenly disappear. 4.If there is difficulty in swallowing, chest pain after swallowing, epigastric pain, hunger and distension, ergas, acid reflux, dyspepsia, nausea, vomiting blood or abdominal pain, diarrhea (more than 2 weeks), difficulty in defecation or lump. Any patient with the above symptoms should pay attention to whether there is already a problem with the digestive tract. 5.Patients who are over 30 years old and have lower GI symptoms such as blood in stool and irregular bowel movements. 6, unexplained vomiting of blood-like coffee-colored material or tarry stools, weight loss. 7.H. pylori infection. 8.History of pelvic radiotherapy and cholecystectomy. 9.Past history of gastric disease, especially chronic gastrointestinal ulcer, polyps, atrophic gastritis. 10.Born in a high incidence area of gastric cancer or have lived in a high incidence area for a long time. 11.I have suffered from other tumors.