Lumbar pain caused by sacral fracture can be solved by the following methods: First, if only mild pain symptoms, you can insist on daily back muscle functional exercise, such as the small flying swallow movement, complete 4-6 groups per day, 12-16 times per group, and prone rowing complete 4-6 groups per day, 10-12 times per group, through the above several exercises, it can make the muscle strength of the lumbar back significantly enhanced in 3-6 months. And stronger, lumbar spine stability is strengthened, lumbosacral pain symptoms can be gradually relieved, or even disappear. Second, lumbosacral physiotherapy, including acupuncture, microwave therapy, and far-infrared therapy, can accelerate blood circulation in the lumbosacral region and reduce pain symptoms. Third, oral administration of vitamin B12 and other nerve-nourishing drugs can also promote the relief of lumbar pain symptoms.