A 3-year-old child urinates about 11 times a day, and may have 0 to 1 urination at night, but all of them are voluntary. If the involuntary urination is more than 2 times a week and lasts for more than half a year, it is considered enuresis. It is mainly caused by dysfunction of the cerebral cortex and subcortical centers, and a few are caused by organic diseases such as cystitis, pinworm disease, and spina bifida. The brain of children under 3 years old is not yet fully developed, and normal urination habits have not yet been developed, so bedwetting is not a pathology, or occasional bedwetting is not a pathology because of playfulness and less sleep, excessive fatigue, and drinking more water before bedtime. If after the age of 3-5 years old, the child is still unable to control urination by himself or cannot wake up from sleep and urinate consciously, it is a pathology. According to Chinese medicine, urine loss is related to the imperfect development of internal organs, especially the weakness of bladder, spleen, kidney and lung. Most children can heal themselves as they grow older, but some continue for several years or even into adulthood. To prevent pediatric enuresis, parents should pay attention to the child’s urinary and bowel training, help the child to develop the habit of urinating before bedtime, do not let the child drink too much drink and water before bedtime, do not get too excited, do not do strenuous sports or games, wake the child once at night to urinate, and do not chastise the child for losing urine.