Low back pain during menstruation needs to be treated according to various causes such as pelvic congestion, pelvic inflammatory disease, low back injury, etc. Common relief methods mainly include: observation and treatment, antibiotic drug treatment, physical therapy, etc. 1. Pelvic congestion: Hormonal changes in the body during menstruation may cause pelvic congestion leading to back pain. It is necessary to pay attention to rest, avoid strenuous exercise, after the end of menstruation, the pelvic congestion will naturally be relieved, and the symptoms of low back pain will also be improved, and can be observed and treated. 2. Pelvic inflammatory disease: Inflammatory damage to the pelvic tissues caused by bacteria and other pathogens may cause low back pain during menstruation. It may need to be treated with antibiotic drugs such as levofloxacin injection, aminotrimoxazole injection, metronidazole injection, etc. as prescribed by the doctor. 3. Lumbar injury: If there is a lumbar injury caused by menstrual back pain, you may need to carry out physical therapy such as hot compresses, physiotherapy, massage and so on. It is necessary to choose the appropriate treatment plan under the guidance of a professional doctor, and not to blindly use medication on your own to avoid adverse effects.