Folate metabolism TT type will not cause fetal arrest. A TT folate metabolism report is mainly an indication that the enzyme activity of folic acid is low, for example, only 30% or less, which means that the absorption of folic acid itself is not very good. If the folic acid metabolism TT type may need to prepare for pregnancy and pregnancy to increase the dosage of folic acid. Avoid folic acid deficiency resulting in abnormal fetal neurological development. In addition, folic acid supplementation is normally done in the first and second trimesters of pregnancy, but TT folic acid may need to be supplemented until after the birth of the child. Folic acid metabolism TT type is no need to be too nervous, generally does not cause embryonic termination, pay attention to the amount of folic acid supplementation under the guidance of the doctor on a regular basis, regular re-examination, prevention of fetal neurovascular malformation can be.