If you always have the urge to urinate, the possible causes are as follows: 1. Chronic or acute urinary tract infections, such as urethritis, cystitis, pyelonephritis, etc., can lead to edematous changes in the mucosal epithelium of the urinary tract, and therefore show increased sensitivity. A small amount of urine can stimulate the sensation of urination, so the patient always feels the urge to defecate, but the volume of urination is not much each time. Mostly accompanied by a history of frequent urination, urinary urgency, painful urination, etc., need to carry out routine urine examination to further confirm the diagnosis. 2, if there are stones in the urinary tract, such as stones in the urethra, bladder or ureter, can produce symptoms of urinary tract irritation. Patients always have a feeling of foreign body and need to urinate urgently or need to urinate urgently to get the foreign body out of the body, so they always have a feeling of holding urine and need to take urine repeatedly. If the stone is accompanied by pain in the area where the stone is located, with back pain or pain in the small abdomen, etc., a urinary ultrasound examination is needed to further identify it. 3. When there is a history of functional disease, such as overactive bladder syndrome, no infection occurs at this time, but there is an excessive and frequent contraction of the bladder forceps, which causes the patient to always have the urge to urinate and the need to go to urinate frequently. Usually there are no symptoms of urinary tract irritation, and routine urinalysis and ultrasound of the urinary system are normal, so urodynamic examination is needed to confirm the diagnosis.