Frequent urination before bedtime is related to physiological factors such as drinking a lot of water and mental tension, and is also considered to be related to cystitis, urinary tract infection, ureteral stones and urethritis. 1. Physiological factors: if people drink a lot of water before going to bed, drinking strong tea or mental tension, recent life stress, etc., will cause frequent urination before going to bed. 2. Urinary tract infection: the disease is related to pathogenic bacterial infection, while urinary tract obstruction, low immunity and so on are the causative factors. Patients with urinary tract infection will have frequent urination, urinary urgency, urinary pain, lumbago and other uncomfortable symptoms, which can be manifested as frequent urination before bedtime. 3. Ureteral stones: Ureteral stones are related to metabolic abnormalities, urinary tract obstruction and medication. Typical symptoms of patients include back pain, hematuria, fever, urinary frequency, urinary urgency, nausea and vomiting, etc., which can also be manifested as frequent urination before bedtime. 4. Uremia: the disease can also cause some patients to urinate frequently before bedtime, but also prone to irritability, extreme thirst and other symptoms. The occurrence of uremia is mainly related to the different degree of lack of argininopressin or renal insensitivity to argininopressin. There are many causes of frequent urination before bedtime, such as medication, pyelonephritis, renal tuberculosis, diabetes and so on. It is recommended to consult a doctor for examination in time, and if it is clear that the disease is caused, you should actively cooperate with the doctor for treatment.