The common causes of lumbar depression and straightening include poor posture, lumbar muscle fatigue, ankylosing spondylitis, etc., which can be recovered through general treatment, physical therapy, medication and surgery. 1. Bad posture: Lumbar depression and straightening may be caused by bad posture, such as long-term sitting posture, long time working or playing cell phone with head down, sleeping on the table and so on. By correcting bad sitting habits, it is conducive to promoting recovery. 2. Lumbar muscle fatigue: Lumbar depression and straightening may be caused by lumbar over-exertion, over-exertion, heavy lifting, etc., so that the lumbar muscle fatigue. Should pay attention to the lumbar proper rest, do not overload, you can wear a waist protector to protect the lumbar spine. Microwave physiotherapy, ultrashort wave physiotherapy, far-infrared ray physiotherapy and other physiotherapy can be carried out on the lumbar region, which can slow down the excessive tension and spasm of lumbar muscles, so as to promote the lumbar curvature to speed up the recovery. 3. Ankylosing spondylitis: Lumbar spine depression and straightening may be caused by ankylosing spondylitis. For patients with mild ankylosing spondylitis, oral anti-rheumatic drugs such as methotrexate, thalidomide, leflunomide, etc. can be taken. At the same time, strengthen the functional exercise of the low back, such as small swallow fly, five-point support and other movements, to promote recovery. For severe ankylosing spondylitis patients, surgery is needed to restore the physiological curvature of the lumbar spine by osteotomizing the lesion and implanting internal fixation therapy. All of the above medications should be used under the guidance of a doctor, avoid self-medication.