Weakness of legs after fifty days of conservative treatment for 77-year-old thoracic spine fracture is recommended to be given general treatment, physical therapy, and medication. Conservative treatment of thoracic spine fracture is generally long-term bed rest, which can cause muscle atrophy and bone loss, resulting in weakness of legs. At this time, the patient should first be given passive flexion and extension of both lower limbs of the hip, knee and ankle joints in bed. At the same time oral anti-osteoporosis drugs (zoledronic acid that) and calcium (calcium carbonate tablets), vitamin D. After half a month of passive exercise, gradually transition to active flexion and extension of the hip, knee, ankle and straight leg raising. At this time, the patient can be supported by two people, or with the assistance of the assistive device, the first to stand on the ground, while the lumbar circumference is fixed, and after standing without discomfort, start to walk with weight gradually, generally after 2 months of treatment, can significantly improve the symptoms of weakness of both legs. Lumbar vertebral fracture after conservative treatment of weakness of the legs, it is recommended to actively consult a physician under the guidance of the treatment.