For malignant tumors, the spine is a common site of metastasis, and tumors from all parts of the body can easily metastasize to the vertebral body. After vertebral metastasis occurs, the tumor cells destroy and replace the bone structure of the vertebral body, making the bone structure of the vertebral body become soft tumor tissue, so that the spine cannot play the role of “keel” and cannot support the weight of the body. Patients feel severe pain in turning over, getting out of bed, sitting and standing, and even dare not cough, which is very painful. At the same time, further growth of the tumor can invade the adjacent spinal cord, compressing and destroying the spinal cord tissue, thus leading to paraplegia and further aggravating the patient’s symptoms. With the help of X-ray fluoroscopy, a special steel needle is sent through the skin into the diseased vertebral body, and bone cement is injected through the needle, which, after solidifying in the vertebral body, strengthens the vertebral body and destroys the tumor tissue to prevent paraplegia. Most patients can feel significant pain relief immediately after surgery, even up to the final moments of life.