An electronic gastroscope is a fiber optic tube having a diameter of about one centimeter, which is sent through the esophagus and stomach lumen from the mouth to the descending portion of the duodenum in order to observe the esophagus, stomach lumen and duodenum. Electronic gastroscope usually the front end of the gastroscope carries a miniature camera that can synchronously and sensitively record the images in the lumen of the tube and dynamically present a bright and clear image of the lumen on a high-definition video display. By magnifying the image information 100 times, mucosal lesions in the descending sections of the esophagus, stomach and duodenum can be clearly visualized to aid in a definitive diagnosis. In addition, pathological cells can be sampled and sent for pathological examination under gastroscopy to clarify the nature of the lesion, which is the diagnostic criterion for gastric ulcer, gastritis, esophageal cancer and gastric cancer. It is recommended that patients need to actively seek medical treatment if they have stomach discomfort to avoid delaying their condition.