Always have the urge to urinate but urinate very little, may be caused by urinary tract infection, bladder stones, prostate enlargement and other reasons. 1. Urinary tract infection: always have the urge to urinate but urinate very little may be caused by urinary tract infection. Such as urethritis or cystitis, due to inflammatory stimuli, resulting in increased sensitivity of the bladder or urethral mucosa, which will make the patient always have the desire to urinate but very little urine, and may also be accompanied by the symptoms of urination pain. 2. Bladder stones: due to the presence of stones in the bladder, frequent irritation of the bladder, there will always be a desire to urinate but little urine, accompanied by urinary difficulties, hematuria and other manifestations. 3. Prostatic hyperplasia: prostatic hyperplasia is mostly seen in middle-aged and old men, the enlarged gland repeatedly irritates the bladder and presses the urethra, which can lead to the symptoms of always wanting to urinate but urinating very little, and can be accompanied by difficulty in urination and other symptoms. In short, patients always have the desire to urinate but little urine symptoms, should go to the hospital in time, clear cause under the guidance of the doctor reasonable treatment.