1.First of all, it is necessary to exclude the special infection of urinary tract, which is commonly tuberculosis bacillus. Routine urinalysis and urinary tuberculosis test can be done. Also urological ultrasound to see if there are abnormalities; 2. To exclude infections caused by secondary diseases of the urinary tract. Such as urinary tract stones. Tumors and other causes of urinary tract obstruction, these diseases can also lead to secondary urinary tract infections. It can be detected by ultrasonography; 3. Urinary tract infections without the above-mentioned conditions, especially in women, are prone to recurrence. It is necessary to pay attention to personal hygiene and living habits in general, and pay special attention to the hygiene of sexual life. Usually drink more water appropriately to increase the volume of urine to play a flushing effect on the urinary tract. In addition, the treatment of urinary tract infections must be thorough after the occurrence of symptoms can not be good to stop the drug, must be to the urinary routine check normal before stopping the drug, otherwise the bacteria temporarily inhibited, stopping the drug when appropriate opportunity to quickly; 4, urinary tract infections are mostly G – bacteria, commonly Escherichia coli, so penicillin is not effective. You can use the class of saxin (quinolone) or cephalosporin antibiotics; 5, increase personal fitness, strengthen exercise, which can improve the ability to resist disease.