Always feel the urge to urinate but the amount of urine is small, male patients are mostly seen in prostatitis, prostate hyperplasia and other prostate diseases; female patients can be seen in pregnancy; also can be seen in the urinary tract infection, stones, overactive bladder, etc., need to improve the examination, in order to clarify the cause of the disease. 1. prostate disease: prostatitis and prostate hyperplasia, prostate hyperplasia in elderly patients, the urethra caused by the pressure, and then frequent urination, urinary urgency, dysuria and other symptoms; prostatitis patients can also be frequent urination, urinary urgency, and more accompanied by urinary pain symptoms, some patients can appear perineal area pain. 2. pregnancy: with the increase in the size of the fetus, the increase in the uterus on the bladder caused by pressure, which led to a decrease in the capacity of the bladder, the patient can be manifested as frequent urination, urinary urgency and other manifestations. 3. Urinary tract infections: most commonly seen in cystitis, urethritis, the patient manifested as frequent urination, urinary urgency, urinary pain, especially urethritis, the patient urethra can appear burning sensation, always have the urge to go to the toilet. 4. Urinary stones: the more common ureteral stones, bladder stones, stones irritate the mucous membrane of the urinary tract, can also appear frequent urination, urinary urgency and other manifestations. 5. Overactive bladder syndrome: it is caused by abnormal contraction of bladder detrusor muscle due to various reasons, and the patient manifests urinary urgency, and due to the reduced capacity of the bladder, the amount of urine is also less. It is recommended that patients seek timely medical treatment and complete all examinations in order to clarify the cause of the disease, and then the professional physician will give appropriate treatment for the cause of the disease.