The current situation of gastric cancer in China is high incidence rate, low early diagnosis rate and poor survival prognosis. More and more people around us are suffering from gastric diseases, so gastroscopy has become familiar to everyone. However, do you really know about gastroscopy? Gastroscopy, in short, is a fiberoptic tube with a camera. During the examination, the fiber hose enters the digestive tract through the mouth or nose, through which the doctor can observe the surface mucosa of the esophagus, stomach and duodenum, helping the doctor to understand whether there are ulcers, bulging masses and varicose blood vessel formation in the digestive tract. What do I need to pay attention to during a gastroscopy? Many people are scared to talk about gastroscopy because they have heard that it is so uncomfortable. It is true that there may be varying degrees of nausea, upper abdominal pulling sensation and distension during the gastroscopy procedure, but there is no need to be too nervous. Moreover, with the promotion and popularization of gastroscopy and the emergence of new transnasal gastroscopy, the uncomfortable feeling during the examination has been greatly reduced and most people can accept the gastroscopy operation. Of course, if the patient is sensitive to pain, fear of operation and intolerance of general gastroscopy can choose intravenous anesthesia painless gastroscopy. You need to know before the examination: 1, if the examination is scheduled in the morning, do not eat after dinner the day before the examination; 2, if the examination is scheduled in the afternoon, you can eat liquid or less crumbly food for breakfast and fast for lunch. Fluid food specifically refers to: a variety of soups, lighter porridge, meat porridge and vegetable porridge are counted. Warm soft less slag diet: is to avoid foods containing more fiber such as celery in vegetables, coarse grains or too hard food. 3, the elderly, frail people can maintain energy intravenously or by drinking glucose, etc.; 4, if you choose to do painless gastroscopy, it is recommended that you should not drink 4-6 hours in advance, and anesthesia visit and assessment should be completed before the procedure; 5, smokers should stop smoking at least one day before the examination; 6, people with movable dentures should remove their dentures before the examination. After the examination you need to know: 1, after the completion of the examination, early may feel bloated, pain and feel something in the stomach uncomfortable feeling, may also burp, but do not worry too much, in general these symptoms will gradually ease, after the examination in the hospital rest and observation for about half an hour before leaving; 2, biopsy patients early try to liquid diet, avoid stimulating food; 3, endoscopic Treatment (polyp removal, mass debridement, vascular ligation) may require a period of time without food after completion, and most elderly patients are currently hospitalized under medical advice.