Routine colonoscopy is generally not recommended for children with gastroenteritis, but if the condition requires it, it can be performed under a doctor’s supervision. If a child has gastroenteritis, routine colonoscopy is generally not recommended. Because colonoscopy will cause serious discomfort to the body, need to be examined under anesthesia, the anesthesia of the child is at risk. In addition, children are young and have a low level of cooperation, so routine colonoscopies are not recommended for small children. Children with gastroenteritis are usually treated symptomatically with diet and medication, and colonoscopy is only an auxiliary means of examination, which is generally chosen with caution. If a child’s gastroenteritis is recurring and persistent, a colonoscopy can be performed after a doctor’s evaluation and in accordance with the doctor’s instructions.