High d-dimer in late pregnancy requires dynamic monitoring as well as drug therapy. 1. Dynamic monitoring: If D-dimer is mildly elevated, 2-3 times the normal value, it is mostly physiologic. During pregnancy, blood viscosity tends to be higher. Pregnant women with gestational hypertension, pre-thrombotic state and gestational diabetes are prone to high D-dimer, and the presence of primary diseases needs to be actively treated, as well as the need for dynamic monitoring of changes in high D-dimer. 2. Medication: If D-dimer is significantly elevated, it is necessary to take anticoagulant drugs such as aspirin or inject low molecular heparin under the guidance of a specialist. In addition, it is necessary to maintain a balanced nutrition during pregnancy, and it is recommended to eat more high-quality protein and fresh vegetables, such as lean meat, beef, cabbage and lettuce. In addition, a high D-dimer level is dangerous and pregnant women need to be monitored regularly and treated if necessary.