A drink of water immediately have urine, may be physiological factors, or due to overactive bladder disease, urinary system inflammation, psychological factors and other factors. 1. Physiological factors: people with fast metabolism usually have the urge to urinate within a short period of time after drinking water, but there is no urinary pain, urgency, or frequency of urination. 2. Overactive bladder syndrome: it is a syndrome mainly characterized by urinary urgency and frequency, but there is no organic lesion, which may be caused by the sensitivity of the bladder sensory nerves, so many people will have the urge to urinate within a short period of time after drinking water. 3. Inflammatory diseases of the urinary system: such as urethritis, cystitis, etc., the disease itself will cause frequent urination, urinary urgency, urinary incontinence, and the symptoms will be significantly aggravated after drinking water. 4. Psychological factors: as soon as you drink water, you immediately have to urinate, may also be too heavy psychological burden, emotional tension and other psychological factors. If you feel that you have to urinate as soon as you drink water, it is recommended that you first observe whether there is any abnormality in the amount of urine, frequency of urination, color, etc., and whether it is accompanied by symptoms such as urinary urgency and painful urination. If the symptoms are obvious and continue without improvement, it is recommended to go to the hospital in a timely manner.