From the perspective of osteosarcoma itself, prevention should involve active exercise, a healthy lifestyle, and a regular schedule. All of these can play a preventive role. However, as of now, there is no clear cause of what triggers osteosarcoma, and it is still unknown. For patients with osteosarcoma, we need to achieve early diagnosis and early treatment. Since many osteosarcomas occur in adolescents, if your child complains of bone pain and feels lumps, and more severely, experiences joint functional impairment, parents must be vigilant. It is advised for the patient to go to a hospital and have an imaging test done to confirm if it is caused by osteosarcoma. Therefore, early diagnosis and early treatment are best.