For some patients with abdominal discomfort, gastrointestinal bleeding, and suspected cancer in the stomach, painless gastroscopy can be clinically chosen to examine. 1. Discomfort symptoms in the upper abdomen, such as abdominal distension and abdominal pain. 2.Regular blood in stool or vomiting blood is considered when there is gastrointestinal bleeding. 3, regular loss of appetite, acid reflux, heartburn can also be done gastroscopy. 4.Unexplained weight loss. 5. Gastroscopy may also be performed when there is painful swallowing, difficulty in swallowing, a feeling of foreign body when swallowing, and a mass in the abdomen. 6.Gastroscopy can also be performed when there is anemia, dizziness, weakness, and panic for unknown reasons. 7.Gastroscopy can be performed when there is frequent pain behind the sternum but cardiopulmonary disease has been excluded. 8, swallowed foreign body reached the esophagus or stomach can be removed through gastroscopy. 9, Stomach stones can also be removed by gastroscopy. 10.Gastroscopy can be done when there is frequent diarrhea, abdominal pain and constipation. 11, some digestive system diseases still exist after resection with gastrointestinal symptoms, can also be examined by gastroscopy. 12.Gastrointestinal polyps can be removed under gastroscopy. Dilation of digestive stenosis can be treated under gastroscopy. The choice of painless gastroscopy is not up to you. The specific kind of people for whom painless gastroscopy is suitable needs to be determined after the doctor’s interview.