Although erythromycin ointment has an anti-infective effect, but for the treatment of urinary tract infection is not obvious, urinary tract infection usually requires systemic use of anti-infective drug treatment. Erythromycin ointment, as a local anti-infective drug, can be used for disinfection of skin surface wounds and anti-infective treatment, but urinary tract infection is more complicated and usually accompanied by systemic symptoms of infection, such as fever, etc., the use of erythromycin ointment is usually not a good therapeutic effect, it is recommended to consult a doctor in time for systemic anti-infective treatment. The anti-infective treatment of urinary tract infection is usually the systemic application of penicillin, cefuroxime, levofloxacin and other drugs, and need to increase the amount of water, quit smoking and alcohol. It should be noted that the use of fluoroquinolone antibiotics such as ofloxacin is prohibited in children. When urinary tract infection occurs, it is recommended to go to the hospital in time; the above drugs need to be used under the guidance of clinicians.