If patients with lower extremity deep vein thrombosis are not treated in time in early stage, in later stage, the thrombus in the vein is mechanized, the vein wall is adhered, the venous blood return is obstructed, plus, the venous valve is destroyed, the venous blood backflow, resulting in lower extremity venous hypertension, the lower extremity is in stasis for a long time, and the syndrome of lower extremity deep vein thrombosis appears. There are a series of clinical manifestations such as heavy lower limbs, swollen limbs, superficial varicose veins, stasis dermatitis, venous ulcers, etc. Venous ulcers cannot heal for a long time or recur after healing, or even become cancerous, or require amputation treatment, which seriously affects the quality of life of patients. In order to prevent the occurrence of post-thrombotic syndrome in the lower limbs, for patients with acute lower limb deep vein thrombosis, in addition to standardized anticoagulation therapy, early thrombus removal and elastic support are also crucial and should be highly valued by healthcare professionals and patients!