Bone secondary malignant tumor usually refers to the malignant tumor has occurred bone metastasis, is relative to the primary bone tumor, once found need to timely medical treatment. Bone secondary malignant tumor can also be called bone metastasis, bone metastasis is not the primary tumor foci in bone tissue, but due to other parts of the tumor cells through the blood or lymphatic fluid transfer to the bone parts, in the long run the tumor cells deposited in the bone will be more and more, and eventually formed bone metastasis foci. When bone metastasis occurs, it usually indicates that the malignant tumor in other parts of the body is in the advanced stage, and the bones at the bone metastasis foci usually have pain, which may be paroxysmal hidden pain or persistent pain. Treatment is often directed at the primary lesion, bone metastases take symptomatic treatment, such as zoledronic acid, alendronate sodium, etc., need to be used under the guidance of the doctor.