Folic acid and aspirin treat two different pathologies and are not better or worse. Folic acid is a water-soluble vitamin that is fundamental to the production of the neural tube in the fetus. Folic acid supplementation during pregnancy is effective in preventing neural tube malformations in the fetus. Supplementation of folic acid is generally recommended to start from 3 months before pregnancy, when taking the right amount of attention should be paid to, not private abuse, pregnant women take too much folic acid, will affect the digestion and absorption of zinc, allergic to folic acid drugs are prohibited. Aspirin can play the role of anti-platelet aggregation, but also to prevent eclampsia during pregnancy, coagulation abnormalities and other diseases, for pregnant women with high blood pressure during pregnancy, you can take aspirin in moderation, can reduce the risk of pre-eclampsia. At the same time need to pay attention to the aspirin allergy patients can not be used. Folic acid and aspirin are not good or bad, it is recommended to take under the guidance of a doctor, do not take medication without authorization to avoid adverse consequences.