Azithromycin is a class B drug in the pregnancy drug classification, not a prohibited drug during pregnancy, relatively safe and can be used in pregnancy through animal testing and human testing, and has less impact on the fetus. If pregnant women have inflammatory infections during pregnancy, they can take azithromycin under the guidance of doctors, and it usually has no significant effect on the growth and development of fetus when taken in appropriate amount, but they should pay attention to the dose, duration and specific time of pregnancy. 1. If taken in large doses for a long time, it may still have an effect on the fetus. Azithromycin is a common macrolide antibiotic with a relatively narrow antibacterial spectrum, so you can choose reasonable and safe adjuvant drugs for treatment at the same time; 2. Pregnancy time: before the 28th week of pregnancy, especially 4-8 weeks belongs to the important period of fetal growth and development, when the fetus is more sensitive to drugs, so pregnant women should use drugs under the guidance of doctors, if the condition is mild, it is usually not recommended to use drugs blindly, so as not to cause If the condition is mild, it is usually not recommended to use drugs blindly to avoid fetal malformation or even miscarriage. After 28 weeks of gestation, the fetal organs have already taken shape and the risk of malformation can be reduced accordingly.