Elderly leg pain knee pain, need to clarify the cause of treatment, mainly patellar chondromalacia, meniscus injury, osteoarthritis, osteoporosis and lumbar disc herniation, etc., generally using conservative treatment, drug therapy, surgical treatment and so on. 1. Chondromalacia patella: the elderly often due to chondromalacia patella of the knee joint, resulting in leg pain knee pain, generally through conservative treatment and rest can be relieved to a certain extent, the pain symptoms are serious can be relieved by the use of non-steroidal anti-inflammatory drugs, such as celecoxib. 2. Meniscus injury: the elderly have meniscus injury, meniscus mild to moderate injury, through conservative treatment fixed rest can be recovered, serious meniscus injury such as meniscus tear, the need for timely surgical treatment, through the arthroscopic meniscus suture or meniscoplasty treatment. 3. Osteoarthritis: Osteoarthritis is a degenerative bone disease, clinical treatment for the use of non-steroidal anti-inflammatory drugs for pain relief, advanced patients with feasible knee replacement. 4. Osteoporosis: Osteoporosis can cause pain in all joints of the body. For patients with osteoporosis, which is often caused by calcium deficiency, calcium and vitamin D can be supplemented appropriately. 5. Lumbar disc herniation: Patients with lumbar disc herniation can suffer from radiating pain in the legs and knees due to nerve root compression. Patients with mild condition can take traction and oral pain relieving and anti-inflammatory drugs such as Celecoxib. Severe cases require surgery to remove the disc tissue. Elderly leg pain and knee pain need to go to the hospital in time for regular treatment.