The causes of lumbar pain in thoracic vertebra 12 compression fracture include connection with lumbar vertebrae and irritation of lumbar tissues. Thoracic vertebra 12 is connected to lumbar vertebra 1. Thoracic vertebra 12 compression fracture directly stimulates the surrounding nerves and tissues, resulting in edema or inflammatory reaction, and the spread of edema will involve the lumbar region thus affecting the lumbar region and causing pain. On the other hand, compression fracture of thoracic vertebrae 12 can also damage the surrounding tissues of the lumbar region, such as lumbar vertebrae 1, which can also cause pain in the lower back. Thoracic vertebra 12 compression fracture pain in the lower back may also have other causes, should be timely to the regular hospital consultation, the doctor according to the symptoms, signs and auxiliary examination to determine the specific condition, according to the condition of the correct treatment.