Elderly people urinate a lot at night, it may be physiological reasons, such as drinking water, taking diuretic food drugs, etc., or pathological reasons, such as diabetes mellitus, urinary tract infections and so on. 1. Physiological reasons: the elderly drink too much soup before going to bed, or eat diuretic things such as watermelon, taking diuretics furosemide, etc., will lead to the amount of urine at night and increase the number of times. This situation can be improved by reducing water intake at night before going to bed. 2. Pathological causes: for example, diabetes, prostate hyperplasia, cardiac insufficiency, urinary tract infection may lead to frequent urination at night. Elevated blood glucose not only increases urine output, but also drinking, urinating and losing weight. Prostatic hyperplasia can be diagnosed by ultrasound of the prostate, and oral terazosin can be taken to improve prostate function; Cardiac insufficiency can check the heart ultrasound and other tests to clarify the condition; Urinary tract infection in addition to frequent urination and urinary urgency, urinary pain and other symptoms, can improve blood, urine routine examination. Diseases that cause frequent urination are not only many and complex. If only occasional nocturnal urination only need to self-observation can be, if it is often no clear cause of the need to raise vigilance, timely to the hospital for examination. The application of the above drugs should be applied under the guidance of a professional physician, to avoid the use of drugs blindly, so as not to aggravate the condition.