The first reason is that the patient drinks a lot of water before going to bed to increase the filtration of the kidneys, thus producing more urine and frequent urination at night, which is caused by physiological drinking too much water, not pathological changes, as long as the amount of water drunk before going to bed is properly controlled to reduce the symptoms. The second thing is that if the patient is a male, he should be considered for prostate hyperplasia. The actual fact is that when the prostate gland is enlarged, some of the glands will compress the bladder and stimulate the bladder, thus causing the patient to urinate frequently, especially at night when the vagus nerve excitability is relatively high and the slightest stimulation of the bladder will cause strong contractions and frequent urination. Then, overactive bladder disorder, bladder neck sclerosis, and interstitial cystitis are considered to be the causes. The above is an analysis of the causes of frequent urination at night in patients, and it is recommended that if the patient is pathologically frequent, he or she should go to a regular hospital for examination in a timely manner and receive symptomatic treatment under the guidance of a doctor.