Lateral collapse of tibial plateau requires surgical treatment, medication and rehabilitation treatment under the guidance of doctor. 1. Surgical treatment: internal fixation of tibial plateau fracture can be carried out. If the articular surface of the plateau fracture collapses more than 2mm, the lateral displacement is more than 5mm, or there is a combination of knee ligament injury and knee inversion or knee valgus more than 5°, then surgery is needed, and patellar tendon amputation or osteotomy of tibial tuberosity can be carried out if necessary. 2. Medication: Usually, patients in recovery and acute stage can be treated with antipyretic and anti-inflammatory drugs such as ibuprofen, indomethacin and nimesulide to relieve pain and swelling, and some of the patients can be treated with antibiotics such as cefuroxime and cephradine to prevent infections. 3. Rehabilitation therapy: patients need to perform joint exercises at an early stage to promote fracture healing and prevent joint stiffness. It is also necessary to supplement calcium, which is conducive to strengthening the bone quality. Patients with lateral tibial plateau collapse need to strictly follow the doctor’s instructions to take appropriate treatment measures, and pay more attention to their own situation, so as to avoid aggravation of symptoms.