If the urinary tract infection is not cured for a long time, it is recommended to be hospitalized for related treatment: 1. To rule out the existence of drug-resistant bacterial infections, after hospitalization, three consecutive urine cultures should be taken and drug sensitivity tests should be done to confirm whether there is bacterial resistance to the drugs currently used. If there are stones, extracorporeal shock wave lithotripsy or surgery should be performed. If there are stones, extracorporeal shock wave lithotripsy or surgery is needed. If there is a combined tumor, surgery is needed, and if there is a combined urinary tract stricture, expansion or indwelling catheterization is needed to achieve a cure.3. Further systemic examinations are needed, including blood glucose measurement, blood routine, blood culture, etc., to find out if there is diabetes or a lowered immunity or systemic bacteremia that causes recurrent infections that do not heal easily. If there is diabetes, insulin should be used to control blood sugar as soon as possible, and the infection can be cured after normalization. If the immunity of the body is reduced, drugs to improve immunity should be used for treatment if necessary, such as thymidine injection.