There is no clinical statement about which is more accurate, MRI or bone scan, different tests have different significance, and patients are advised to follow the doctor’s advice to choose the appropriate test according to their condition. 1. Nuclear magnetic resonance: it is a new medical imaging technology utilizing the principle of nuclear magnetic resonance, which has excellent diagnostic function for parenchymal organs such as brain, thyroid, liver, gallbladder, spleen, kidney, pancreas, etc. as well as the heart and large blood vessels. With the advantages of multiple imaging parameters, fast scanning speed and high tissue resolution, it is the main means of early screening for tumors, heart disease and cerebrovascular disease. However, MRI is contraindicated for special groups such as those who have pacemakers, retained objects in the body or metal prostheses. 2. Bone scanning: commonly known as “bone imaging”, one of the common examination items in nuclear medicine. Bone scanning can clarify the morphology of bone tissue or whether the metabolism is abnormal, so that doctors can easily diagnose bone tumors, arthritis, osteomyelitis, osteoarthritis, trauma, etc. Usually, bone scanning requires an injection of radioactive drugs. Usually, bone scan needs to be injected with radiopharmaceuticals first, so it has a certain degree of radioactivity, and it is contraindicated for those who are allergic to bone visualizing agents. Patients are advised to cooperate with their doctors to choose the appropriate examination method according to their own needs and conditions.