Children who wet the bed should be seen and treated as early as possible to avoid affecting their physical and mental health, causing low self-esteem and inconvenience and burden to their parents. If the child needs to live in school, it is more likely to cause inconvenience and psychological burden, so it is important to seek medical attention early. Here is some general knowledge about enuresis. Most normal children can control urination during sleep after the age of 3. If they still cannot control urination after the age of 5, they are called enuresis, and in severe cases, they also wet the bed during the day. Enuresis is divided into primary and secondary enuresis. Primary enuresis refers to the inability to control urination after sleep since birth, most of which is functional and has no clear cause, but 80% of children with enuresis only have a smaller bladder capacity than normal children of the same age. Secondary enuresis refers to children who have been able to control urination after sleep for a period of time after birth (usually more than 1 year), but then enuresis is caused by disease or environmental or emotional factors. 1. Key points for diagnosis (1) The onset of the disease is above the age of 3 years, and urine is frequently lost, or until the age of 5 years or above, urine is still lost more often. (2) Deep sleep, not easy to wake up, bedwetting occurs every night or every few days, or even several times a night. (3) There are no abnormal findings in urine routine and urine culture. (4) X-ray radiography, some children can be found to have occult spina bifida, urinary X-ray may see structural abnormalities. 2, differential diagnosis (1) urinary incontinence; its urine from the loss of sleep and sleep, regardless of day and night, out of incontinence, in children are mostly children with congenital dysplasia or sequelae of encephalopathy. (2) Neurogenic dysuria: It is characterized by children who urinate frequently and urgently during the daytime and disappear after going to sleep, which is very different from enuresis. (3) Urinary tract infection: frequent and urgent urination, accompanied by painful urination, and inability to control urination even when awake during the day. There are white blood cells or pus cells in the routine urine examination. If not treated early, it will not only bring inconvenience to family life, but more importantly, cause psychological pressure to children, such as introversion, incompatibility, lack of concentration due to poor rest, lack of self-confidence and low self-esteem, thus affecting children’s healthy physical and mental growth.