Venous thrombosis in pregnant women is treated by low molecular heparin, elevation of the affected limb for braking, compression stockings, filter implantation, and incision and thrombectomy. The blood circulation of pregnant women during pregnancy is hypercoagulable, and as the fetus grows and the abdominal pressure increases, low activity can cause slow blood flow, which in turn can lead to venous thrombosis. When venous thrombosis is mild, pregnant women should rest in bed, wear compression stockings, elevate the affected limb and brake it, and use anticoagulant drugs as prescribed by the doctor, such as low molecular heparin, which is safe because it does not affect the fetus through the placenta. Some pregnant women’s thrombosis has been more serious, such as lower limbs white, purple, cold and other symptoms, the emergence of femoral bruises and white femoral swelling is more urgent, through the filter implantation, incision thrombectomy, can solve the swelling of the lower limbs, the swelling is more serious to take interventional catheterization thrombolysis to deal with. Pregnant women with venous thrombosis, once occurred, go to the hospital in time to deal with, reduce the impact on pregnant women and fetus.