When the patient woke up with the symptoms of lumbar pain bending, it may be due to physiological factors, may also be due to lumbar dorsal musculoskeletal fasciitis, acute sprain and other factors. 1. Physiological factors: may be due to the patient sleeps on a soft mattress, the night lumbar muscles do not get adequate support, resulting in the muscles continue to maintain a state of tension does not, caused by lumbar muscle strain, and may be due to the lumbar cold and other factors, can also be caused by waking up to the phenomenon of lumbar pain can not bend down. 2. lumbar dorsal myofasciitis: when the patient suffers from lumbar dorsal myofasciitis, lumbar muscle edema and inflammation occurs, resulting in low back pain, limited activities, when the patient sleep will cause lumbar muscles to be extruded, the lumbar blood supply is reduced, aggravating the symptoms of low back pain, resulting in waking up with a low back pain and bending the phenomenon. 3. Acute lumbar sprain: the patient’s lumbar back muscles are acute strains, lumbar muscle bleeding, edema and inflammation, resulting in lumbar pain, limited activities, when the patient sleep will be compressed to the lumbar musculature, so that the lumbar muscle ischemia and aggravate the lumbar pain, resulting in the phenomenon of waking up with lumbar pain and can not bend down. When the patient woke up with a back pain can not bend down the symptoms, may also be due to ankylosing spondylitis and other diseases caused by the patient is recommended to consult a doctor in a timely manner, a clear cause of the disease, in accordance with the doctor’s instructions standardized treatment.