Bone cancer generally refers to malignant tumor of bone, and there is no such statement as 5 major symptoms of bone malignant tumor in early stage. Early stage patients may suffer from pain, and with the development of the disease, symptoms such as lump and activity dysfunction may appear. Bone malignant tumors are classified in many ways, the cause of primary bone malignant tumors is still unclear, if it is secondary bone malignant tumors, it is caused by the transfer of tumors from other organs to the bones. Bone malignant tumor patients will have pain, which will gradually increase with the development of the disease, and accompanied by local mass, pathological fracture, bone dysfunction and other symptoms. Patients with bone malignant tumors can be treated with chemotherapy, radiotherapy or limb-preserving surgery under the guidance of doctors, and the prognosis of some patients is better.