The bulging of the tailbone is related to congenital developmental deformity or fracture, and can be treated according to the cause, such as non-surgical treatment or surgical treatment. 1. Congenital developmental deformity: If a congenital developmental deformity occurs during the developmental process, it may lead to a bulging tailbone, and if there are no obvious symptoms, no special treatment is usually necessary. 2. Fracture: If the bulging tailbone is caused by a fracture, it needs to be treated according to the severity of the fracture. If the situation is mild, it can be repositioned by manipulation and immobilized in a plaster cast; if the situation is more serious, it may need to be treated surgically to correct the symptoms of the bulging tailbone. Normally, it is necessary to observe the physical condition more often, regular checkups, and it is best not to bear weight for a long time.