In 1987, Galibert, a French physician, reported the world’s first percutaneous vertebroplasty (PVP), which was performed with good results. In 1998, Wong et al. performed the first percutaneous kyphoplasty (PKP), a technique developed from PVP, which utilizes an expandable balloon that expands with liquid pressure and is less strong in The purpose is to use the balloon to open the compressed vertebral body and create a cavity, so that the bone wall around the cavity is compacted and the bone cement injected into the cavity is less likely to leak into the surrounding area, and the required perfusion pressure is also smaller, thus increasing the efficacy and safety, which is effective for restoring the height of the compressed vertebral body and reducing the kyphosis. It is more effective in restoring the height of the compressed vertebral body and reducing the posterior convexity deformity. 1. PKP can provide definite pain relief for patients, with pain relief rates exceeding 90% for osteoporotic patients and 75% to 90% for tumor patients. 3. PKP is less expensive and relatively simple to perform, eliminating the need for repeated punctures in the pedicle to establish access to the bone expander. 4. Advantages: It is an effective palliative method for the treatment of spinal metastases because it is less invasive, has a shorter operative time, significantly reduces pain and improves the clinical symptoms of patients with spinal metastases, and improves the quality of life.