Urinary tract infection IV levofloxacin about 3~7 days can be good, because the condition has a mild and serious, recovery time is not the same, the specific circumstances vary from person to person; if the drug about 3 days symptoms do not improve, need to replace other drugs. Urinary tract infection will be given broad-spectrum antibiotic treatment in the acute stage to control the infection, commonly used drugs are levofloxacin, ceftriaxone sodium, etc.; patients with serious infections need to be given drugs intravenously, under normal circumstances, 3~7 days can be good after the intravenous levofloxacin. If the drug about 3 days the condition did not improve, may be the causative organism on the levofloxacin resistance, this time need to replace other antibiotic drugs. Urinary tract infection should actively cooperate with the doctor’s treatment, and the full amount of full course of medication, can not privately stop the drug, so as to avoid recurrence of the disease.