First of all, it is certain that osteosarcoma is very malignant. Once osteosarcoma is detected, it is necessary to actively prepare for surgery, rule out surgical contraindications, and then proceed with surgical treatment. During the surgery, efforts should be made to perform an extended resection, and if necessary, amputation may be required. After the surgery, the excised specimen must be sent for pathological examination to determine the pathological type. Then, based on the examination results, effective radiotherapy and chemotherapy should be chosen to control the possibility of recurrence or metastasis of osteosarcoma and to extend the patient's life as much as possible.