General anesthesia for gastroscopy in children is harmful, mainly including damage to the gastric mucosa, laryngeal edema, vomiting and so on, and it is recommended to be carried out under the guidance of doctors. Children usually choose general anesthesia when performing gastroscopy, which can promote the smooth progress of the operation and reduce the body’s metabolism. However, general anesthesia also has certain hazards, which may cause gastric mucous membrane damage during the procedure due to improper operation, and general anesthesia may also cause laryngeal edema in the process of intubation. In addition, as the excitability of the vagus nerve is reduced during general anesthesia, the reflux of gastric contents may easily occur and cause vomiting. Therefore, the vital signs of children should be closely monitored during general anesthesia for gastroscopy to avoid the above symptoms.