The instruments used in gastroenteroscopy have been strictly sterilized and checked, and the operation is disposable, so there is no need to worry too much about cross-infection. At present, the materials used in gastroenteroscopy have undergone strict quality control, and the disposable gastroenteroscope is used in the operation, which will not be reused, and cross-infection will not occur, so there is no need to worry too much. Gastroenteroscopy is generally safer and more reliable when performed in regular hospitals or medical checkup centers. Gastroenteroscopy can directly observe the lesions in the mucosa of the gastrointestinal tract, and can also perform microscopic resection surgery. There may be mucosal damage after gastroenteroscopy, so pay attention to avoid fatty meat, hot pot and other greasy, spicy food. You can eat millet porridge and other light and easy to digest fluid food. The use of qualified gastroenteroscopy, in the regular hospital for examination, etc. generally will not have cross-infection, do not worry too much.