When pregnancy is found after taking anti-inflammatory drugs, the possible effects need to be judged according to the type of anti-inflammatory drugs and the duration. The common types of anti-inflammatory drugs in clinical practice include cephalosporins, penicillins, quinolones and macrolides. Generally, cephalosporins and penicillins have less effect on the fetus, cephalosporins such as cefoxitin and cefoperazone, and penicillins such as amoxicillin and flucloxacillin. While macrolide anti-inflammatory drugs such as chloramphenicol and erythromycin have obvious adverse effects on embryonic development; quinolones such as levofloxacin and moxifloxacin may cause fetal malformation. It is recommended to bring the medications taken and consult with the hospital. The doctor will handle the case according to the time of the last menstruation, the amount of oral medication and the type of medication, and consider whether to terminate the pregnancy or continue the pregnancy as appropriate. Generally speaking, within 14 days after fertilization, the external effects on the embryo are “all” or “none”, that is, if the adverse effects are significant enough, the embryo will stop, otherwise the embryo will develop as an intact individual without adverse effects. If the adverse drug effects occur after 14 days and up to 8 weeks, it is the period when malformations are likely to occur.