The symptoms and phenomenon of waking up in the morning with lower back pain and no significant pain in the lower back during the day are most likely due to lumbar muscle strain. There are many diseases that cause back pain, and there are one or two dozen common causes of back pain, but waking up with back pain in the morning and having back pain after a long rest period but no pain during the day is probably due to lumbar strain. Of course, it still needs to do systematic examination and corresponding auxiliary examination to be able to determine, but according to the lumbar muscle strain temporary treatment is possible, first of all, avoid bending back to bear weight, and secondly, local microwave physiotherapy can be done, with blood circulation and blood stasis medicine treatment.