Whether it is feasible to administer only heparin every day for lower extremity DVT needs to be decided based on the specifics of the thrombus, and in the case of a fully formed DVT, surgical removal of the thrombus is also required. The use of anticoagulant drugs for lower extremity DVT is an important therapeutic measure, such as subcutaneous injection of low molecular heparin or oral Saban class, etc., and it can also prevent further formation of lower extremity DVT affecting the prognosis. Therefore, for the early stage of lower extremity DVT, such as floating thrombus, it is feasible to administer only heparin every day according to the condition. For lower extremity DVT that has fully formed or is old, daily heparin only cannot achieve the therapeutic goal, and interventional surgery, such as percutaneous DVT, is needed. When DVT occurs in the lower limbs, it is necessary to actively consult the doctor and follow the doctor’s instructions for reasonable treatment.