A 4-year-old baby may not always have complete control over random urination, and bedwetting may be normal, or it may persist until the age of 5 or more and still occur. It should be noted that bedwetting may be primary or secondary due to other diseases, such as those caused by underdeveloped nervous system, urinary tract infection, invisible spina bifida, spinal cord lesions, and urogenital disorders. If a baby has bedwetting for a long time, parents should promptly take the baby to the hospital to consult a doctor and identify the cause for treatment. Common causes 1, genetic factors: if the baby’s parents have had or one of them has had bedwetting in early childhood, the baby is also prone to bedwetting; 2, the spinal urinary center is not fully developed: 4-year-old baby’s spinal urinary center is not fully developed, can not control urination and defecation at will, it is easy to bedwetting; 3, the nervous system is not well developed: the baby’s nervous system is still developing, not particularly Perfect, 2 hours before going to sleep too much activity or overexcited, after going to sleep baby may be because the cerebral cortex does not return to normal levels, and thus the phenomenon of bedwetting; 4, inappropriate urination habits: some babies as a child for a long time using diapers, at night in the case of deep sleep held by parents to urinate, did not develop a sense of independent urination, it is easy to lead to urination in sleep. Treatment 1.Baby should not drink water or drinks 2 hours before going to bed every day, and develop the habit of urinating before going to bed, so as to reduce the number of times and the amount of urination at night; 2.Parents should wake up the baby regularly at night for urination, and when the baby develops the habit, he will get up to urinate on his own at night when he has the intention to do so; 3.If conservative treatment does not work, parents can take the baby to the urology department of the hospital for examination, and through the guidance of the doctor Take medication to control the symptoms of enuresis. If your child still urinates frequently at the age of 5, more than once a month, you need to treat him or her promptly, because some of the enuresis can continue into adulthood if left uncontrolled.