Bone cancer is a malignant tumor of bone tissue, commonly known as osteosarcoma, chondrosarcoma, etc. Its early symptoms mainly include local pain, lumps, functional disorders, etc. Pain is the most significant symptom in early stage of bone cancer, and almost all bone cancers are accompanied by local pain, which starts as intermittent and mild pain, and gradually develops into persistent severe pain, resting pain, night pain and pressure pain. 2.Bone cancer often appears as local swelling or lump, which grows rapidly. In addition, because of the rich blood vessels in it, the local skin temperature often increases, and the mass may also press the surrounding blood vessels, thus showing the local superficial venous anger. 3.Local masses press on adjacent joints, or due to pain, joint movement dysfunction often occurs, and the patient’s movement is limited. 4.Cancer cells invade normal bone tissue and easily cause pathological fracture. Clinically, pathological fracture caused by minor trauma is the first symptom of some bone cancer. 5.Some patients with rapid progress of the disease will show systemic cachexia such as fever, weight loss, fatigue, poor appetite and anemia in early stage. Early symptoms of bone cancer are very important to help early detection of bone cancer, thus early diagnosis and early treatment of the disease, which is of great help to the prognosis of patients.