Always getting up at night to urinate may be caused by physiological factors, such as drinking too much water or psychogenic urinary frequency, and may also be caused by urinary stones, prostate enlargement, diabetes and other factors. 1. Physiological factors: drinking a lot of water before going to bed at night or sleeping with excessive mental stress can lead to frequent urination at night, but there are no other abnormalities, after eliminating the above triggers, it can be restored by itself. 2. Urinary stones: due to the presence of stones in the urinary tract, when turning over at night, the stones move, causing irritation to the urinary tract, which will cause frequent nocturia, common diseases for urethral stones or bladder stones, may also appear urinary pain, urination difficulties and other symptoms. 3. Prostatic hyperplasia: a common disease in older men, the enlarged gland will repeatedly irritate the bladder, which can lead to frequent nocturia, accompanied by urinary weakness, urinary difficulties, and even cause urinary retention. 4. Diabetes mellitus: may be related to genetic, excessive obesity, poor dietary habits and other factors, can lead to increased blood glucose, which will cause frequent urination at night, may also be accompanied by fatigue, drinking and other symptoms. Frequent urination at night with other abnormalities, and exclude the physiological factors, it is recommended to consult a doctor for examination and treatment.