The patient’s left lumbar pain, first consider the existence of lumbar sprain and lumbar muscle strain, followed by the consideration of wind-cold stimulation, and finally consider lumbar spine disease, kidney disease, gynecological diseases. 1, lumbar sprain and lumbar muscle strain: bad habits in daily life, such as prolonged sitting and standing or improper posture leading to sprain, lumbar muscles are pulled, it is easy to induce left lumbar pain; 2, wind-cold stimulation: such as blowing the air conditioning at night, do not cover the quilt, easy to cause the lumbar soft tissues by the cold and dampness of evil invasion, resulting in poor blood circulation, which may lead to aseptic inflammation, resulting in the left lumbar pain; 3, lumbar vertebrae disease: lumbar vertebrae Degenerative changes, or long-term stooping and weight bearing caused by lumbar disc herniation, will stimulate the nerves in the spinal canal, causing left lumbar pain, often accompanied by numbness and pain in the legs; 4, renal disease: left kidney stones, left kidney inflammation or left renal area tumors can also induce left lumbar pain; 5, gynecological diseases: such as female pelvic inflammatory disease, left adnexitis and other chronic inflammatory diseases caused by oozing, stimulation of the posterior peritoneum, which may cause lumbosacral soreness . When chronic inflammation of the cervix spreads to the left uterosacral ligament, it will also cause symptoms of lumbar pain. In addition, patients with gynecological tumors and huge ovarian cysts sometimes have left-sided low back pain. In daily life, it is necessary to develop a good routine, do not bend excessively, avoid doing strenuous exercise for a long time and standing for a long time. Patients with low back pain can improve their symptoms through hot compresses, physiotherapy, massage, acupuncture, etc. If the pain cannot be relieved, they should go to the hospital in time to do the corresponding examination, and then give the appropriate treatment according to the diagnosis.