Night urination, then it is recommended to go to the hospital for relevant examinations to clarify the possible causes: first, male prostate hyperplasia, there can be increased frequency of night urination. Often due to prostate hyperplasia protruding into the bladder cavity after the stimulation of the bladder triangle, so there will be frequent urination. Especially at night, the vagus nerve excitability is relatively high, the prostate gland protrudes into the bladder cavity, the congestion is more obvious, the sense of stimulation increased, thus resulting in the phenomenon of increased urination at night. Second, the urinary system infection, can be caused by increased frequency of urination. Especially at night urination frequency increase, often due to the infection caused by the bladder sensitivity increased, then the effective capacity of the bladder is reduced. A little urine stimulation, can produce obvious willingness to urinate, so there will be frequent nocturia phenomenon, and in severe cases can even appear to have a few minutes to urinate. Third, chronic urinary retention patients, often seen in female pelvic floor organ prolapse, or urethral stenosis, urethritis patients, there can be incomplete emptying of the bladder. So after lying down at night, there can be a clear sense of incomplete urination, there is also an increase in the frequency of urination, patients often combined with the symptoms of urinary weakness.