To check for gastric disease, the following kinds of related tests are needed: 1) upper gastrointestinal imaging, commonly known as barium meal; 2) gastroscopy; 3) Helicobacter pylori testing; 4) blood sampling to test blood indicators such as the level of gastrin. Patients come in asking for signs of discomfort, such as nausea, acid reflux or stomach pain or even dark stools in the past two days, and must have a gastroscopy. With a family history of peptic tract, it is important to see if H. pylori is infected, because H. pylori is the causative agent of gastritis, gastric ulcer and stomach tumor. It also depends on the patient’s condition, such as elderly people with underlying cardiopulmonary disease, asthma, or other chronic diseases, to see which test is appropriate. Upper gastrointestinal imaging is a non-invasive test, gastroscopy is a minimally invasive test, and the H. pylori test is also a non-invasive test, and the appropriate test is done based on the patient’s complaints of which discomfort. If you have gastric disease, according to the age segment or the underlying disease, the symptoms of the complaint to do the appropriate examination, gastric disease must be seen, do not think it is a minor problem and delay the treatment.