In women, bladder swelling is mostly caused by cystitis. Because the female urethra is relatively short, thick and straight, which is only one fifth to one sixth of the length of the male urethra, bacteria can easily travel backward through the urethral orifice to reach the urinary tract, causing inflammatory reaction and cystitis, accompanied by frequent urination, urgency and pain in the bladder, and even bloody urine in serious cases, It is recommended to go to the hospital for routine urine examination and urine bacterial culture plus bacterial drug sensitivity test to further clarify the diagnosis. Once the diagnosis is confirmed, first of all, it is recommended to drink more water. Drinking more water can flush the urethra, which can promote the absorption of inflammation and the recovery of symptoms. Second, it is recommended that oral antibiotics should be the first choice for symptomatic treatment of quinolones, such as levofloxacin Norfloxacin and ciprofloxacin can also be treated with cephalosporins, such as cefdinir, cefixime, cefuroxime, etc.