Low back pain may be a kidney problem, which can be seen in kidney diseases such as acute glomerulonephritis, in addition to other urological diseases such as ureteral stones, gynecological diseases such as pelvic inflammatory disease, orthopedic diseases such as lumbar muscle strain, rheumatic diseases such as rheumatism, and so on. 1. Renal diseases: low back pain can be seen in acute glomerulonephritis, pyelonephritis, acute interstitial nephritis and other renal diseases. 2. Other urological diseases: such as ureteral stones and other diseases, usually cause acute low back pain, sometimes accompanied by active hematuria. 3. Gynecological diseases: such as pelvic inflammatory disease, cervicitis, uterine fibroids, corpus luteum rupture and other diseases may cause back pain. 4. Orthopedic diseases: such as lumbar muscle strain, lumbar intervertebral disc herniation, osteoporosis, lumbar vertebral fracture and other diseases, can cause lumbar pain to a certain extent. 5. Rheumatic diseases: such as rheumatism, etc., may also appear back pain symptoms. In addition, lumbar pain can also be seen in lumbar trauma and other conditions. It is recommended that patients with low back pain consult a doctor in time to find out the cause and follow the doctor’s instructions to standardize the diagnosis and treatment.