The differences between common bone pain and cancer bone pain are: the etiology, pain characteristics, treatment and prognosis. 1. Causes: Common bone pain may be caused by inflammation, strain injury, bone fracture, etc. Cancer bone pain may be caused by bone tumor or other malignant tumor bone metastasis. 2. Characteristics of pain: General bone pain can be relieved by rest and does not affect sleep, and is not accompanied by systemic consumptive changes, while cancerous bone pain is obvious at night and cannot be relieved by rest, and is accompanied by systemic consumptive changes, such as emaciation, anemia, and so on. 3. Treatment: Generally, bone pain can be recovered after removing the cause of the disease, while cancerous bone pain requires treatment of malignant tumors and is not relieved by general painkillers, and severe cancerous pain requires strong sedatives such as morphine. 4. Prognosis: Generally, bone pain can be cured after removing the cause of the disease, and generally does not affect life expectancy. However, cancerous bone pain is mostly caused by bone metastases or malignant tumors, which has a relatively poor prognosis and is difficult to be cured. If bone pain occurs, patients should consult a doctor in time to find out the cause of the disease, carry out targeted treatment as soon as possible, and use medication under the guidance of the doctor to prevent the condition from deteriorating.