Lumbar pain may be caused by lumbar muscle strain, lumbar intervertebral disc herniation, pelvic inflammatory disease, etc. Usually, you should pay attention to rest, avoid straining, and change the bad posture and so on. 1. Lumbar muscle strain: long-term stooping work, bad posture and so on lead to lumbar muscle strain, causing lumbar muscle spasm and pain. Patients should pay attention to rest, avoid exertion, change the bad posture, can be localized hot compresses, accelerate lumbar blood circulation and relieve lumbar muscle spasm, reduce pain symptoms. 2. Lumbar disc herniation: lumbar disc herniation can cause lumbar pain when it compresses the surrounding tissues and nerve roots, patients should rest in bed, wear a girdle on daily basis, avoid bending and weight-bearing and other actions, and can follow the doctor’s instructions for oral ibuprofen, celecoxib and other non-steroidal anti-inflammatory drugs to relieve pain. 3. Pelvic inflammatory disease: After the occurrence of pelvic inflammatory disease in women, the inflammation stimulation radiates to the lumbosacral region can cause lumbar pain, should pay attention to more rest, avoid exertion, light diet, keep the vulva clean. You can use levofloxacin, metronidazole and other drugs under the guidance of the doctor for anti-infection treatment. The causes of lumbar pain also include lumbar spine tumor, lumbar spine tuberculosis, urinary system diseases, etc. It is recommended that patients go to the hospital in a timely manner to improve the examination, identify the cause of the disease, and give targeted treatment according to the cause of the disease.