Objective To evaluate the effect of double interventional thrombolysis for treatment of acute venous thrombosis in lower limb and discuss the problems of its clinical use.

Objective To explore scheme of anticoagulation and thrombolysis after ultrasound ablation for lower limbs deep vein thrombosis (DVT).

Conclusion: to prevent pulmonary embolism, it is effective to inferior vena cava filter insertion before the patient with acute DVT is given by thrombolytic therapy.