Most cases of lumbar 5 arch fracture are not due to trauma. If it is due to trauma, active examination is required to clarify the exact extent of the injury, and in most cases, surgery is required. If it is not due to trauma, the lumbar 5 arch fracture is mainly due to overexertion and congenital developmental abnormalities. First of all, conservative treatment can be carried out, and it is important to actively reduce weight, correct lumbar posture, avoid prolonged sitting and standing, and not to bend over, especially to avoid bending over to bear weight. Appropriate functional exercises for the muscles of the low back, including the three-point support method, five-point support method, swallow fly, etc., can be fixed in the lumbar girth and taken down when resting. If some symptoms appear, oral anti-inflammatory and analgesic drugs loxoprofen sodium and aminoglutethimide; sedative mannitol injection, dehydration and swelling treatment; nerve drug treatment with methylcobalamin capsules. Conservative treatment is not effective and the symptoms gradually worsen, is the need for surgical treatment.