The recurrent urinary tract infections in the elderly are usually due to low resistance or infection with drug-resistant bacteria, which leads to such problems, so it is best to be able to further examine, mainly through urine culture or culture of urethral secretions, to clarify the specific pathogenic microorganisms causing urinary tract infections, drug sensitivity, and then select sensitive antibiotics for treatment. Generally for drug-resistant bacteria are more sensitive antibiotics, including furantoin enteric tablets, sulfadiazine tablets, levofloxacin tablets, need to continue oral treatment for a period of time, in order to completely remove the pathogenic microorganisms, urinary tract infection will be completely well. At the same time, because the resistance of the elderly is relatively low, so it is best to use some immunomodulators during the treatment period, such as injection of thymidine injection, can well improve the immune function of the elderly, urinary tract infections are less likely to recur.