Gastroscopy is the gold standard for examining gastrointestinal lesions, as it can reveal small lesions in the stomach, esophagus and duodenum. Gastroscopy is also invasive and minimally invasive. Some people feel quite uncomfortable when doing it. When the stomach tube enters the throat, especially patients with laryngitis will experience nausea, dryness and vomiting, which can only be known by personal experience, and some people have runny nose and eyes, and the specific performance varies from person to person. There are also patients who feel pain, which may also have a certain relationship with the doctor’s manipulation, usually pass after a while, if there are no complex lesions, the examination can be over in ten minutes. After all, it is worthwhile to endure the pain for a while, so that the cause of the disease can be clarified and the correct medication can be used to return to a healthy body. The gastroscopy process, if the operating doctor is not experienced, and the operation is heavy, it will cause damage to the throat and stomach mucosa, the best gastroscopy is to choose a regular hospital, the doctor’s high level, experienced, medical quality can be guaranteed.