Surgery for lower extremity venous thrombosis is generally not very risky and the risks of lower extremity venous thrombosis surgery are manageable, as there are always some risks associated with any surgery in a clinical setting. During the procedure, if a DVT is accidentally dislodged and floats down the bloodstream into the lungs, it may cause a pulmonary embolism. To prevent the clot from drifting into the lungs, it is recommended that an inferior vena cava filter be placed in the veins of the lower extremities prior to the surgery, which can reduce the risk of lower extremity venous thrombosis surgery to a certain extent. After the surgery, it is recommended that the patient undergoes frequent and regular checkups, performs good anti-infection operations, and elevates the affected limb when lying in bed, which is more conducive to the patient’s recovery. In addition, after the lower extremity venous thrombosis surgery, patients should be treated with drugs such as hydroclopidogrel as prescribed by the doctor, and should have regular checkups. If you feel unwell, you should go to the hospital in time for examination, and after clarifying the cause, you should deal with it accordingly.