Bedwetting at night is a common phenomenon in the life of small children under 5 years old and may be normal. If the bedwetting is still occurring at the age of 5 and above, it may be enuresis and requires active medical treatment. I. Children under 5 years old: if they wet the bed at night, it is mostly because the nervous system is not fully developed and cannot fully control urination, and generally no special treatment is needed, and the symptoms of bedwetting will gradually disappear as they grow older; II. Children at 5 years old and above: if involuntary urination occurs at the age of 5 and above, resulting in bedwetting at night, it may be enuresis. It is usually caused by genetic factors, sleep-wake disorders, anomalies in the rhythm of antidiuretic hormone secretion, abnormal bladder function, developmental delays, psychological factors, organic diseases, and other factors. This condition requires our intervention. Specific treatment is as follows: 1. Daily care: Children should pay attention to regular work and rest, go to bed early and wake up early. Drink normally during the day to ensure adequate fluid intake and avoid intake of strong tea, coffee and other beverages; the bladder should be emptied before bedtime, and no more food and water 2-3 hours before bedtime. Eat more fiber-rich foods, such as fresh fruits and vegetables. You should not be strenuously active or overexcited after meals. At the same time, attention should be paid to developing good urination habits of regular daytime urination and bedtime urination; 2. Urination interruption training: that is, interrupting urination in the middle of each urination, counting from 1 to 10 by yourself, and then urinating out. Repeated training helps to exercise the pelvic floor muscles and improve the ability to control urination; 3. Urine holding training: especially for children with small bladder capacity, proper planned urine holding training can expand the bladder, increase functional bladder capacity and reduce the number of urination at night; 4. Medication: some medications for urine loss, such as desmopressin, can be applied as prescribed by the doctor.