There are several possible reasons for low back pain bending: first, lumbar muscle strain, lumbar muscle strain can appear chronic injury to the lumbar muscles, and lead to low back pain, very obvious when bending, sedentary, cold lumbar pain, to early physical examination, and related tests to early diagnosis, to exclude other diseases, early treatment. The second is lumbar dorsal myofasciitis, lumbar dorsal myofasciitis can appear lumbar pain, lumbar pain is very significant when bending, resulting in the patient dare not bend, to early examination to diagnose and treatment. Third, lumbar disc herniation, lumbar disc herniation can also compress the nerves, resulting in significant back pain when bending, the symptoms of not daring to bend. Fourth, lumbar spine slippage, lumbar spine slippage can appear when bending back pain and do not dare to bend, to carry out the lumbar spine X-ray, CT, nuclear magnetic examination, to early diagnosis and treatment.