Benign bone tumor Clinical observation: In most cases, benign bone tumor can be mainly observed and does not need special treatment; Chen Bingyao, Department of Orthopedics, The First Affiliated Hospital of the General Hospital of the Chinese People’s Liberation Army Surgical treatment: When the following conditions occur, such as large size or rapid growth in a short period of time, pain or pressure symptoms, pathological fracture or risk of pathological fracture, surgical treatment is needed, and surgery is performed by local excision or scraping Bone grafting. Malignant bone tumors Low grade (low malignancy)-surgical resection: such as common chondrosarcoma, fibrosarcoma, chordoma, liposarcoma, etc. High grade (highly malignant)-surgery-based comprehensive treatment: preoperative chemotherapy-surgery-postoperative chemotherapy combined with immunotherapy, biotherapy, radiotherapy, etc., such as osteosarcoma, Ewing sarcoma, malignant fibrous group, etc. Tumors of hematopoietic origin or metastatic origin – systemic antitumor therapy as the main treatment and surgery as a supplement: e.g. myeloma, lymphoma, metastatic cancer, etc.