The common causes of bedwetting include physiological factors, prostate enlargement, too deep sleep and other reasons. It is necessary to treat the symptoms according to the cause, and the common treatment methods are medication, surgery, general treatment, and so on. 1. Physiological factors: children because of the imperfect development of the cerebral cortex nerves, which will lead to the bladder for the urine control is not perfect, and thus the phenomenon of bedwetting. It is a normal phenomenon, no special treatment, when the body gradually develops perfectly, bedwetting phenomenon naturally disappears. 2. Prostatic hyperplasia: severe prostatic hyperplasia will obstruct the urethra, the bladder can not discharge a large amount of urine, resulting in bladder urine filling, bladder urine filling to a certain amount at night when sleeping can lead to natural overflow, thus forming bedwetting. Medications such as Doxazosin, Tamsulosin Hydrochloride etc. can be administered. Surgery can also be used to remove the enlarged prostate via the urethra. 3. Deep sleep: Too much exertion can lead to deep sleep, which can lead to a decrease in the ability to perceive, and if you drink too much at night, it can lead to bedwetting. General treatment can be used, in life to avoid fatigue, avoid excessive drinking water at night, and so on. Medications should be used under the guidance of a physician. Adults who frequently wet the bed need to go to the hospital for timely treatment.