Venous thrombosis includes deep vein thrombosis and superficial vein thrombosis, both of which are treated differently. Superficial vein thrombosis leading to thrombophlebitis can be treated conservatively with, for example, oral anticoagulants and medications to promote venous circulation. Topical phlebitis medications, such as Xylitol, can promote the absorption of the thrombus. If medication is not effective, the vessel with superficial venous thrombosis can be surgically removed. Deep vein thrombosis can be treated medically with anticoagulants, thrombolytic drugs and symptomatic medications. Anticoagulation is the basic and primary treatment. Anticoagulation is important regardless of the stage of DVT; anticoagulants include heparin, low molecular heparin, warfarin, and newer anticoagulants such as rivaroxaban. If the DVT is fresh, thrombolysis or thrombus aspiration can be attempted under the protection of an inferior vena cava filter; thrombolytic agents include urokinase, fibrinolytic enzymes, tissue-type fibrinogen activator (t-PA), etc. If severe pain and swelling occur, intravenous active drugs can be given for treatment. If bruising or even white swelling of the femur occurs, surgical removal of the embolus can be used for treatment. At the same time, bed rest and reduced activity should be paid attention to; elevate the affected limb so that it is higher than the heart level to improve venous return and reduce edema and pain. If long superficial vein thrombosis is not treated in time, it may further develop into deep vein thrombosis and lead to serious conditions such as pulmonary artery embolism.