The normal value of D-dimer during pregnancy is about 0.5 mg/l, and it increases slightly with the growth of gestational weeks. A woman’s blood is in a hypercoagulable state after pregnancy, especially in the second trimester, which can easily lead to blood clots. When a woman has gestational hypertension, a high D-dimer can lead to an increased risk of occurrence and needs to be treated with appropriate anticoagulant medication to prevent the woman from developing blood clots, which can affect the health of the mother and child. After pregnancy, women need not only proper nutrition, but also regular ultrasound to check whether the growth and development of the fetus is in line with the gestational week, as well as blood tests for liver function, kidney function, blood count, coagulation function, D-dimer, etc., for a comprehensive analysis of the health status of the pregnant woman.