Osteosarcoma is a highly malignant tumor of the bone, primarily presenting with pain, elevated skin ridges, and bulging veins. Radiological examination often reveals bone abnormalities, such as Codman's triangle and periosteal reactions due to sun exposure. If there is no metastasis in the early stages, limb amputation surgery can be performed, as well as limb-sparing surgeries involving devitalization and reimplantation or prosthetic implantation. Post-operative treatment involves high-dose chemotherapy, which can inhibit the growth of the bone tumor and extend the patient's survival time. There is a high probability of lung metastasis occurring in the early stages of the disease. If metastasis occurs, the survival time may be significantly reduced. Early diagnosis of this disease is crucial, and it must be treated with chemotherapy as early as possible. With the rapid development of chemotherapy, the five-year survival rate for osteosarcoma can increase to over 50%. Thus, early detection, early treatment, early surgery, followed by chemotherapy and radiotherapy are essential to prolong the patient's survival time.