Gastroscopy for children is generally not harmful, but gastroscopy may cause damage to the esophagus or gastric mucosa, bleeding, etc., loss of appetite, nausea, vomiting and other discomforts. Children who have stomach pain, blood in the stool or vomiting blood and other aspects of the discomfort, you may need to go to the hospital for gastroscopy, hospitals for children to do gastroscopy tube is relatively thin, and the doctor’s technique is also very skillful, generally will not have any harm to children. However, the gastroscope is inserted directly into the stomach through the mouth, so it may cause some damage to the esophagus or stomach mucosa or bleeding, but the degree is relatively mild. Children may experience transient discomfort, difficulty or loss of appetite, nausea, vomiting and other aspects of the phenomenon, but usually will gradually ease. Parents of children who have gastroscopy can consult a specialized doctor, and if the discomfort persists after gastroscopy, it is recommended to seek medical attention in a timely manner.