Folic acid CT type means the utilization ability of folic acid is medium, which indicates that the metabolism of folic acid in the body is basically normal, but in order to reduce the risk of neurovertebral malformation in the fetus, it is recommended that pregnant women take 0.4mg of folic acid orally before pregnancy, 0.8mg of folic acid orally after pregnancy, and change to 0.4mg at the end of 12 weeks of pregnancy until the full term of pregnancy. During pregnancy, pregnant women should eat more folic acid-rich foods such as animal liver, dairy products and green leafy vegetables, take more rest, drink more water, and exercise properly.