There is no direct relationship between smoking and taking folic acid during pregnancy. Smoking does not directly affect the absorption of folic acid, and taking folic acid is not a remedy for smoking. Women who smoke should quit immediately after they find out they are pregnant and take folic acid regularly. Smoking is not recommended during the preparation period or during pregnancy because it may affect fetal development and can easily lead to intrauterine growth restriction and increase the rate of malformations, as well as intrauterine distress and even miscarriage. Therefore, if a woman who smokes finds out that she is pregnant, she should stop smoking immediately and have regular maternity checkups and teratology tests. The best time to take folic acid during pregnancy is from 3 months before pregnancy to the early 3 months of pregnancy to prevent fetal neural tube abnormalities. If a woman has the habit of smoking and finds out she is pregnant unintentionally, it is recommended to stop smoking and take folic acid supplements in a timely manner, usually for 3 months, after which she can switch to other multivitamins required by the pregnant woman under the guidance of her doctor for a comprehensive supplement to improve the immune system of the pregnant woman. Smoking is harmful to the body, it is recommended to quit smoking, especially during pregnancy must not smoke, usually pay attention to rest, appropriate activities, you can maintain close contact with friends and relatives, strengthen interaction, help to quit smoking successfully, deepen the relationship. Diet needs to be balanced, supplemented with vitamin-rich fruits and vegetables, eat less spicy and stimulating food, do not drink alcohol.