Often, the tubes used for gastroscopy are not disposable. The tube used for gastroscopy is a more precise instrument, and its price is also more expensive, it is difficult to do a one-time use, so the tube of gastroscopy is basically not disposable. However, the tube will be fully sterilized before the gastroscopy to avoid the infection of infectious diseases caused by sharing a tube, so patients can rest assured. In addition, under regular circumstances, gastroscopy before the need for blood tests, there is no hepatitis, AIDS and syphilis and other diseases, patients with infectious diseases need to be separated from the endoscopy of the ordinary patients use the mirror. In addition, before performing gastroscopy, you need to prepare for fasting, fasting for 6 to 8 hours and 4 hours of water, which will help the doctor to observe the situation inside the stomach. Patients who need to do gastroscopy should go to regular hospitals, under the guidance of doctors.