Causes of urinary urgency: 1, urinary tract infection, when the infection occurs, the urethral mucosa epithelium is congested, edema, and microdamage, when urine passes through the damaged epithelium and congested, edematous mucosa, can produce a strong sense of urinary urgency, except for urinary urgency, may also be accompanied by urinary frequency and painful symptoms of urination. 2, overactive bladder disease, that is, the urinary tract does not exist infection, but the bladder due to the stimulation of urine and unstoppable The contraction of the bladder due to the stimulation of urine and the increased sensitivity of the bladder. In this case, a slight storage of urine in the bladder can produce a strong urge to urinate and urinary urgency, usually without symptoms of urinary tract irritation. 3, Interstitial cystitis, due to the absence of the amino sugar layer in the inner layer of the bladder mucosa, resulting in direct contact with urine in the submucosa of the bladder, when a strong urge to urinate can occur. In addition to urinary urgency, pain on the pubic bone can also occur, and most patients do not have urinary symptoms, but rather symptoms of urine storage.