Frequent urination in 50-year-old men has physiological and pathological factors. Common pathological factors include: prostate hyperplasia, prostatitis, urinary tract infections and so on. 1. Physiological factors: with the gradual increase in age, the body’s function will gradually decline, for the 50-year-old man, the stretch of the bladder will also appear to reduce. Therefore, when drinking water and alcohol in excess, so that the body intake of water is too much, then the symptoms of frequent urination, that is, the number of times of urination increases. 2. Prostatic hyperplasia: It is a benign hyperplastic disease mostly seen in middle-aged and old-aged men. The enlarged prostate tissue will squeeze the urethra to varying degrees, resulting in urinary disorders, which commonly include frequent urination, urinary urgency, increased nocturia, urinary retention, etc. Frequent urination is the earliest symptom to appear. 3. Prostatitis: when the prostate gland has an inflammatory reaction, the prostate will have congestion, edema and other manifestations, thus stimulating the urethral mucosa and the bladder outlet area, which leads to the emergence of frequent urination symptoms. 4. Urinary tract infection: mainly caused by bacterial infection. Inflammatory media will produce stimulation of the urethra and bladder, thus causing bladder contraction, leading to the emergence of frequent urination symptoms, in addition, the patient will also have urinary urgency, urinary pain and other symptoms. It can be seen that there are many reasons that cause frequent urination in 50-year-old men, and it is recommended to clarify the cause of the disease and target treatment.