Folic acid metabolism test suggests moderate risk of fetal malformation may occur. Folic acid metabolism test indicates moderate risk, which means the activity of folic acid in the body is reduced. It may be that the intake of folic acid in pregnant women is insufficient or the absorption is impaired. Folic acid deficiency in early pregnancy may affect the developmental condition of the fetus and fetal neural tube abnormality may occur, which requires pregnant women to take folic acid supplementation quantitatively to meet the needs of fetal growth and development. In addition, low folic acid levels during pregnancy due to impaired folic acid metabolism can also induce hypertensive disorders during pregnancy, so it is recommended to take folic acid regularly during pregnancy under the guidance of a doctor. Folic acid, also known as vitamin B9, cannot be synthesized in the human body and can only be ingested exogenously. For pregnant women at moderate risk, oral folic acid needs to be taken as prescribed by the doctor. It should be noted that overdose of folic acid may affect fetal development. Pregnant women should follow medical advice when taking folic acid supplements, on time and in the right amount, and should not increase the dosage or miss the dose on their own. Pregnant women should eat a variety of foods rich in folic acid, such as animal liver, eggs, beans, green leafy vegetables, fruits, etc. In addition, they should have regular maternity checkups to observe the growth and development of the fetus and seek medical attention in case of abnormalities.