Elderly people with knee deformation and pain can be treated as follows: 1. basic treatment: reduce exercise, proper muscle exercise and physical therapy; 2. medication: including oral, topical, intravenous, joint cavity injection drugs; 3. restorative treatment: including corrective surgery, arthroscopic treatment; 4. restorative and reconstructive treatment: including joint replacement, joint fusion, bone amputation, etc.; 5. others: wear braces, while combining medication for basic treatment.