There are many causes of leg pain, including lumbar disc herniation, osteophytes of the knee joint, degenerative bone changes, and insufficient blood supply to the arteries of the lower limbs, resulting in varicose veins. Therefore, further relevant examinations should be performed in combination with physical examination. If the patient has significant swelling of the lower extremities, color ultrasound examination of the veins of the lower extremities can be performed, as the restricted venous return can also be painful and can also manifest as skin pigmentation and, in severe cases, ulcer formation. In mild cases, compression stockings can be worn, and in severe cases, surgery can be performed. Arterial system disease requires arterial color ultrasound and anti-atherosclerotic medication. You should quit smoking, stay away from alcohol and tobacco, and exercise properly. Patients with lumbar disc herniation should have a CT examination of the lumbar disc and also need physical therapy, mainly massage, acupuncture or traction.