Suddenly starting bedwetting in an 8-year-old child may be caused by genetics, or it may be caused by the child sleeping too deeply, drinking too much water before going to bed, or not producing enough hormones. 1. Genetic factors: If the child’s father or grandparents have a history of enuresis, it may be a genetic factor. 2. Deep sleep: If the child sleeps too deeply, it will be difficult to wake up during bladder irritation or urine overflow. It is important to develop a good work routine, go to bed early and get up early, and avoid overworking during the day. 3. Drinking too much water before going to bed: When drinking too much water before going to bed, or drinking strong tea, coffee and other stimulating beverages, will affect the brain center, resulting in the child sleeping late and a large amount of urine can not be detected, so you should control the amount of drinking water, avoid stimulating beverages before going to bed. 4. Insufficient hormone secretion: when the child’s antidiuretic hormone secretion is insufficient, there will be more urine production, the phenomenon of polyuria at night, and the occurrence of bedwetting, which needs to be further examined and treated according to the cause. It is recommended that patients develop good sleeping habits and bowel habits, and do not blindly use medication on their own. If bedwetting can not be relieved, it is recommended to consult a doctor in time to clarify the cause of the disease and then treat it.