In most cases, children with hydrocephalus can swim normally because there is no causal link between hydrocephalus and swimming in children. The main cause of hydrocephalus in children is related to congenital abnormalities, which often lead to obstruction of cerebrospinal fluid, especially the reflux of cerebrospinal fluid, causing hydrocephalus. At this time, children often have an enlarged skull, and some also cause mental retardation, while swimming does not cause hydrocephalus in children, nor does it cause an increase in hydrocephalus symptoms, so children can swim normally when they have hydrocephalus.