The main causes of nighttime bedwetting in children include the following. First of all, due to children with congenital spina bifida caused by symptoms, with congenital spina bifida will cause serious nighttime bedwetting, need to timely surgical treatment. Secondly, children with urinary tract infections, urinary tract infections will cause frequent urination, urinary urgency, urinary pain and other symptoms of urinary tract irritation, children at this time will also appear bedwetting at night. In addition, due to children suffering from simple enuresis caused by symptoms, children suffering from simple enuresis will also cause bedwetting at night, can be applied to children to shrink the spring capsule to carry on the treatment.