The possible reasons for the feeling of wanting to urinate are as follows: 1. Chronic infection exists in the urinary tract, when the sensitivity of the mucous membrane is increased, and a small amount of urine stimulation can produce an obvious sense of urination. 2. The patient may feel a sense of urination and may have symptoms such as hematuria and painful urination. It is recommended to perform ultrasound of the urinary system or cystoscopy, urethroscopy and other related examinations to rule out the presence of stones, tumors and other irritating lesions. 3. If there are various causes of increased residual urine in the bladder, such as prostatic hyperplasia or urethral stricture in men, neurogenic bladder, etc., the feeling of frequent urination can occur because of incomplete bladder emptying and urine is always stored in the bladder, so the feeling of urination is always present. Ultrasound measurement of residual urine or ultrasound of the prostate, urethroscopy and other related tests are needed to further clarify.