Early pregnancy generally refers to the first 12 weeks of pregnancy. Levofloxacin belongs to the quinolone class of antibiotics and should not be used by pregnant women under normal circumstances. However, if taken carelessly, it may have adverse effects on the fetus, but it also needs to be combined with the specific pregnancy time and examination to determine whether the fetus can be retained. 1, taken within 2 weeks of fertilization: within 2 weeks after fertilization, belongs to the allopathic stem cell period, about 4 weeks of pregnancy, belongs to the early pregnancy. The effect of taking drugs in early pregnancy on the fetus can be summarized as “all or nothing”. At this time, the cells of the gestational sac are not differentiated and the administration of levofloxacin may produce two results: one result is that the gestational sac is not affected by the drug and remains healthy; the other result is the complete death of the gestational sac, which is manifested by spontaneous abortion or embryonic arrest. After taking levofloxacin during the 2nd week of pregnancy, if the fetus survives and develops in accordance with the gestational week, it may be considered for retention. 2. Taken at 2-8 weeks after fertilization: If the drug is taken at 2-8 weeks after fertilization, it may affect the fetus and it is recommended to terminate the pregnancy. However, if the embryo develops according to the normal cycle, the pregnancy can be continued. Therefore, pregnant women need to go to the eugenics department for further consultation and examination, taking into account the month of pregnancy, the amount of oral levofloxacin and the number of days to take it, and then decide whether to carry out medication or terminate the pregnancy. 3, taken after 8 weeks of pregnancy: At this time, if the pregnant woman only takes 1-2 tablets orally, the effect on the fetus is relatively small. If the drug is taken for 1 week or even longer, because levofloxacin has a greater impact on cartilage tissue, and the bones of the embryo are developing in the early stages of pregnancy, the impact on the fetus should not be underestimated, so it is necessary to go to the eugenics department for consultation to decide whether the fetus needs to be kept.