Breastfeeding women can breastfeed for 2~3 days after levofloxacin infusion, and premature breastfeeding should be avoided. Levofloxacin belongs to the fluoroquinolone class of drugs, children’s cartilage development will play an adverse effect, so children under 18 years of age is prohibited, because levofloxacin will be metabolized through breast milk, if the baby drink milk containing levofloxacin may have adverse effects on the baby, so breastfeeding women are prohibited to use quinolones, even if you need to use the drug, you need to pause breastfeeding. If breastfeeding women in breastfeeding intravenous infusion of levofloxacin need to be metabolized after the drug before breastfeeding, infusion of levofloxacin half-life of 6.48 hours, about 30 hours can be 95% of the drug out of the body, for insurance purposes, it is recommended that breastfeeding women infusion of levofloxacin 3 days before breastfeeding, should not be breastfeeding too soon. 3 days can be given to the baby for formula milk feeding or timely addition of The baby can be fed with formula or supplemental food within 3 days. In addition, women who are breastfeeding should follow the doctor’s instructions to use the medication, and consult the physician’s advice before using the medication, not unauthorized use of medication.