Children may not wake up on their own at night, but have no other symptoms. Urinalysis and kidney tests have all been normal. Generally, babies who are five years old or older may still wet the bed at night, and if the frequency reaches twice a month or more, it is medically referred to as ’nocturnal enuresis’. It is recommended to first check for the possibility of a hidden spinal bifida (hidden spinal bifida), and also pay attention not to be too tired during the day. Otherwise, if they sleep too deeply at night and have urine, they may not wake up easily and end up wetting the bed. Of course, it’s also important to avoid drinking too much water before bedtime. Reduce nighttime urine output, and consider buying a timed alarm clock for regular urination.