The feeling of having to urinate may be caused by physiological factors or may be a symptom of common diseases, such as cystitis, urinary stones and overactive bladder. 1. Physiological reasons: when excessive water intake is caused by drinking a lot of water recently, the increase in urine constantly stimulates the bladder will always feel the urge to urinate. Secondly, holding urine for a long period of time, increasing age, mental overstress and other factors may lead to the situation of always feeling the need to urinate. 2. Inflammatory reaction caused by cystitis will stimulate the bladder, the patient will have reflexive bladder contraction phenomenon, a little urine will cause the urge to urinate. 3. Patients with urinary tract stones may experience irritation of the ureter and bladder due to the movement of stones in the bladder and urethra, which may cause dysuria when the stones are blocked in the urethra. 4. Patients with overactive bladder may also exhibit frequent urge to urinate. Patients should go to the hospital immediately when they experience discomfort.