There is no urine, but the old feeling of urination in the bladder, then the possible causes: 1, cystitis: when inflammation of the bladder occurs, there can be mucosal congestion, edema. Checking the cystoscope, you can see that the mucosal vascular texture in the bladder is dense and is accompanied by edema. In this case, irritation is always felt in the bladder and the patient always feels the presence of urine in the bladder but is unable to expel it every time he goes to urinate. Anti-infection treatment is recommended, and this symptom will disappear naturally after the infection is completely controlled. 2. Urinary stones: especially stones in the lower ureter and bladder stones. It can stimulate patients to produce the desire to urinate frequently and urgently, always feeling that there is urine in the bladder, but unable to discharge urine when urinating. It is recommended to perform an ultrasound examination of the urinary system to understand the presence of stones, and if there are stones, this sensation can also return to normal after the irritating factors are removed by lithotripsy or stone extraction.