Always feel the urge to urinate but not much urine indicates the existence of frequent urination, which may be caused by psychogenic urinary frequency, urinary tract infection, overactive bladder, prostatitis, prostate hyperplasia. 1. Psychogenic urinary frequency: usually caused by psychological overstress or excessive fear, there will be frequent urination, only occasionally, after adjusting the psychological state will be improved. 2. Urinary tract infection: such as urethritis or cystitis, due to inflammatory stimuli, resulting in increased sensitivity of the bladder or urethral mucosa, which can cause urinary urgency and incomplete urination, accompanied by urination pain and other symptoms. 3. Overactive bladder syndrome: it may be related to autonomic dysfunction or low estrogen level, which can make the function of the bladder unstable, leading to frequent bladder contraction, which will cause urinary urgency and incomplete urination. 4. Prostatitis: due to the presence of infection in the prostate gland, resulting in the enlargement of the prostate gland, causing pressure on the urethra, which will cause frequent urination, incomplete urination, there may also be dribbling of urine, perineal distension and pain and other symptoms. 5. Prostatic hyperplasia: a common disease in older men, the enlarged gland repeatedly stimulate the bladder and oppression of the urethra, which can lead to frequent urination, accompanied by urinary difficulties, and in severe cases can lead to urinary retention. Always feel the urge to urinate but not much urine, lasting for a long time, it is recommended to consult a doctor for examination, clear causative factors and timely treatment, to avoid aggravation of the lesion to avoid delaying the condition.