There are many causes of lumbago, and the most common cause of lumbago on one side is due to lumbar muscle strain. Like keeping a posture for too long, acute sprain of the waist, not paying attention to rest, etc., without active treatment, will become chronic injury over time, which are the main causes of lumbar muscle strain. For the treatment of lumbar muscle strain, you can appropriately use some blood-stasis activating drugs, or hot physiotherapy. In addition, do not keep the waist a posture for too long, more exercises to exercise the lumbar back muscle, to avoid acute attacks are beneficial. For women, lumbago may be caused by gynecological inflammation, in which case, further examination should be conducted for gynecological diseases.