Statistical differences were observed between PE and non-PE groups in concomitant with deep vein thrombosis, prothrombin time, DFR, D-dimer, pregnancy weight, systolic blood pressure, diastolic blood pressure, number of fetuses, anticoagulant therapy before PE diagnosed, start time of anticoagulant therapy, and duration of anticoagulant therapy (all P < 0.05). This evidence concerns the gene F2 and deep vein thrombosis.