Lower back pain may have the following reasons: First, lumbar muscle strain, when the lumbar muscle strain can appear in the lower back muscle pain discomfort symptoms, especially in the exertion and cold when the pain is very obvious, this time to carry out early checkups and inspections, to exclude other diseases to carry out early diagnosis and early treatment; Second, kidney deficiency, when the kidney is weak can also appear in the lower back of the pain, accompanied by symptoms of knee weakness; Third, rheumatoid or ankylosing spondylitis, when rheumatoid involved in the spine, or ankylosing spondylitis, rheumatoid can also be found in the spine. Secondly, kidney deficiency, when kidney deficiency can also appear lower back pain, accompanied by knee weakness, then early diagnosis of traditional Chinese medicine pulse, for early treatment; Thirdly, rheumatoid or ankylosing spondylitis, when rheumatoid spondylitis or ankylosing spondylitis, there can be lower back soreness at the sacroiliac joints, which can worsen in the morning, accompanied by the symptoms of morning stiffness, then early blood tests and spinal sacroiliac joints of the X-ray examination, for early diagnosis and early treatment. In this case, blood tests and X-ray examination of the spinal sacroiliac joints should be carried out at an early stage for early diagnosis and early treatment.