Aspirin enteric-coated tablets should not be taken during pregnancy, there are indications can be taken in small doses under the guidance of a physician. Aspirin enteric-coated tablets are a non-steroidal antipyretic and analgesic drug that passes easily through the placenta. The instructions for this drug clearly states that women taking it during pregnancy should pay attention to: 1, animal testing shows that the first trimester of pregnancy, taking aspirin enteric-coated tablets has led to fetal developmental malformations such as cleft palate, cleft lip, congenital heart disease and other malformations; 2, the last trimester of pregnancy long-term application of large quantities of aspirin may lead to prolongation of the gestation cycle, the full-term of pregnancy is not able to launch an effective uterine Contractions, but also lead to an increased risk of direct closure of the fetal ductus arteriosus; 3, aspirin in late pregnancy, but also may lead to more serious bleeding during delivery, but also increase the risk of intracranial hemorrhage in the fetus.