The possible causes of frequent and urgent urination are as follows: First, acute urinary tract infection, when there is obvious frequency and urgency of urination, which is due to congestion and edema of the urethral mucosa, so there is increased sensitivity and irritation, and there are obvious symptoms of urinary tract irritation, which need to be confirmed by routine urine examination and urine culture test. Secondly, the presence of urinary tract stones, especially stones in the lower or terminal ureter and bladder stones, can cause strong urinary tract irritation symptoms and frequent and urgent urination symptoms. Bladder stones can also cause interruption of urination, and ureteral stones can cause pain in the lower back and abdomen, and ultrasound examination of the urinary system is needed to make a clear diagnosis. Third, if there are endocrine diseases, such as high blood sugar, frequent urination, urgent urination, and increased urination can also occur. This is due to elevated blood glucose, which in turn leads to elevated urine glucose and osmotic diuresis, resulting in frequent and urgent urination, and requires blood glucose and urine glucose testing to clarify the cause.