Oral aspirin is taken during pregnancy to prevent high blood pressure during pregnancy and to prevent the occurrence of preeclampsia For some pregnant women with special constitution, aspirin is needed to prevent miscarriage. Oral aspirin is relatively safe for both the pregnant woman and the fetus, because the dose of aspirin enteric-coated tablets is not large, and usually does not cause fetal malformation. Pregnant women should take oral aspirin on a regular basis and should not stop taking it at will, and should also go to the hospital for regular checkups.