How many years can one live with a thrombus in the lower limbs needs to be analyzed on a case-by-case basis, and is related to the location and size of the thrombus, so it is not possible to make a generalization. If the lower extremity arterial thrombosis, once formed, the onset of the disease is more acute, can lead to lower extremity arterial vascular blockage, causing interruption of blood flow to the distal tissues, this situation may not have a great impact on the life expectancy, but more is to affect the function of distal limbs, such as severe pain in the lower extremities, numbness, cold, etc., and in severe cases, there will be sensory and motor dysfunction, it is recommended that the vascular surgery to carry out appropriate treatment. If it is superficial vein thrombosis of the lower limb, basically it will not have significant impact on life expectancy either. However, in the case of deep vein thrombosis of the lower limbs, the thrombus is easy to be dislodged here, and if it is dislodged and blocks the main pulmonary artery, there is a risk of sudden death, which is a more critical situation. Patients should quit smoking and drinking, and at the same time need to eat a light diet in daily life, avoiding high-fat and high-sugar intake, eating more fresh fruits and vegetables, and keeping bowel movement smooth.