If a child does not wet the bed after the age of 5 years, it is within the normal range, because before the age of 5 years, because the development of the brain and central nervous system is less mature, children will occasionally wet the bed at this time, which is mostly a physiological phenomenon. After the age of 5, the neurological development of the brain is relatively mature, and most children no longer wet the bed. If a child still wets the bed frequently after the age of 5, we must promptly find the cause, for example, some children are suffering from congenital spina bifida, while others have bedwetting caused by kidney deficiency, and these should be treated with timely intervention.