With the increase of aging population in society, the number of patients with osteoporosis increases year by year, and vertebral compression fracture is one of the main complications of osteoporosis. Patients are bedridden for a long time due to pain, losing their ability to work and self-care, and their quality of life is significantly reduced. Since the symptoms cannot be relieved rapidly by anti-osteoporosis drugs, they often rely on pain medications, thus bringing a series of side effects, while open reduction internal fixation surgery is traumatic and difficult for patients to accept, and the internal fixator is prone to loosening causing internal fixation failure. Percutaneous ball ankylosing kyphoplasty (PKP) is a new technique of minimally invasive spine surgery. It has many advantages, such as good pain relief, small surgical trauma, correction of posterior convexity deformity and significant reduction of cement leakage rate, and has developed rapidly in recent years at home and abroad, becoming the main surgical procedure for the treatment of osteoporotic vertebral fractures. 1.Treatment method: The patient is placed in supine position, local anesthesia, routine disinfection and towel laying, and the core is punctured under frontal and lateral fluoroscopic guidance to the midline of the arch root shadow, and then stopped at 2-3L before the posterior edge of the vertebral body cortex. The core was extracted and the dilating cannula and working cannula were placed in turn, and the dilating balloon was placed after fine drilling, and the balloon was dilated by injecting the contrast agent, and after restoring the height of the vertebral body, the balloon was extracted and the bone cement was injected during the drawing period. After the operation, the patient lies flat and is allowed to sit up and move down after 12 hours. 2.Treatment principle: Through balloon expansion and bone cement injection, the height and strength of the diseased vertebrae are increased to restore spinal stability and prevent further aggravation of the fracture from compressing the spinal cord. At the same time, the injection of bone cement solidifies into a mass within a short period of time, impeding the decrease in support caused by calcium deficiency or osteolytic destruction and fixing the fracture; the heat generated during the polymerization reaction causes necrosis of the tissues around the bone cement, destroying the nerve endings and achieving the purpose of pain relief.