The reason is that the bacterial infection causes extensive congestion and edema of the bladder mucosa and microscopic damage to the bladder mucosa epithelium, and urine stimulates the locally damaged mucosa to produce strong urge to urinate and painful swelling and discomfort in the small abdomen, and in severe cases, patients may have symptoms such as hematuria, back pain or fever. A routine urine examination is recommended, and the diagnosis can be confirmed if a large number of leukocytes or elevated leukocyte esterase is seen in the urine routine. It is recommended to choose antibiotics for oral or intravenous infusion treatment. You can choose one capsule of levofloxacin, 3 times a day for one week, or one capsule of cefixime, 2 times a day for one week, and drink more water and urinate more during the treatment period. If urinary frequency is obvious, you can take one oral sodium bicarbonate tablet three times a day to relieve the urine PH value of excessive acidity and reduce the symptoms of frequent urination.