Walking legs heavy like lead may be due to lower extremity venous thrombosis, hypertension, right heart failure, diabetes mellitus and lumbar spinal stenosis and other reasons. 1. Lower extremity venous thrombosis: When lower extremity venous thrombosis occurs, the venous blood in the lower extremity can not return to the heart, and then stagnate in the lower extremity and the surrounding tissues, and there is neural edema, so the patient will have the feeling that the walking leg is heavy, like lead. 2. High blood pressure: high blood pressure will lead to increased pressure in the peripheral arteries and increased resistance of small arteries, which will lead to increased permeability of capillaries, causing blood to seep into the tissue fluid, resulting in edema of the tissues of the lower extremities, which will also lead to the symptom that the patient’s legs feel heavy and lead-filled. 2. Right heart failure: patients with right heart failure will lead to blood return obstacles in the limbs, long-term blood return obstacles will lead to edema, and walking legs heavy, like lead. 4. Diabetes: patients with diabetes will lead to an increase in blood viscosity, resulting in blood clots, blood pressure, and diabetes patients will also cause paralysis of the nerves, nerve edema and a series of symptoms, resulting in the lower limbs walking heavy, like lead. 5. Lumbar spinal stenosis: patients with lumbar spinal stenosis have typical intermittent claudication symptoms, walking legs heavy, need to rest for a while and then walk. Walking legs heavy like lead symptoms, it is recommended to go to a regular hospital, do not delay treatment.