The location between the buttocks and the waist is called the sacrum, which consists mainly of the sacrum and the coccyx. If there are localized pain symptoms, it is usually considered as lumbar muscle strain, sacral fracture, tailbone dislocation, as well as lumbar spinal stenosis, lumbar disc herniation and other diseases, the patient will have severe pain, activity limitation, and even can not lie down when there is a fracture, taking X-rays and CT scans can confirm the diagnosis of the above diseases. Once diagnosed, early treatment should be provided to bring clinical symptoms under control as soon as possible, otherwise it will affect the patient’s normal life and movement. In addition, keeping sitting and fixed posture for a long time will also cause pain symptoms in the sacral region, which will lead to corresponding lesions. Therefore, attention should be paid to protect the sacral region in normal life to avoid strain, trauma and other pathological changes, otherwise it will lead to patients not being able to rest and work normally.