Enuresis, commonly known as bedwetting, is a form of involuntary urination, which clinically refers to involuntary urination in bed during sleep. The unconscious urination that occurs when a child reaches the age of bladder control and still cannot wake up from sleep at night is called enuresis. The exact definition of enuresis is still not uniform, and Norello suggested that bedwetting is diagnosed in girls over the age of 5 and boys over the age of 6 at least once a week. In contrast, Norgard (1996) considered bedwetting at least 1 night per month in children over 5 years of age. The prevalence rate reported abroad is 12% – 26%. Most children do not have any urinary or neurological disorders, and the majority of children with primary enuresis stop on their own by puberty. In infants and young children, the bladder function is controlled by simple spinal reflex arcs because the higher centers are not yet well developed, and the higher centers cannot inhibit the spinal urinary centers, so enuresis can occur and is not pathological. However, at the age of 3 years, the higher centers are becoming well developed and can control the urethral sphincter at any time, so they should not lose urine. In China, children over 5 years of age with persistent bedwetting are called enuresis, and enuresis is divided into primary and secondary.