The causes of low back pain are muscle strain, lumbar spondylosis, gynecological diseases, urinary system diseases, etc., need to treat the cause of drug therapy, there is no clear fast-acting drugs. 1. For lumbar pain caused by lumbar muscle strain, you can follow the doctor’s instructions oral ibuprofen and other non-steroidal anti-inflammatory drugs, ethylpiperidone and other muscle relaxants, lidocaine and other blockade of the nerve of the lumbar back pain. 2. For lumbar pain caused by lumbar disc herniation, oral acetaminophen and other non-steroidal anti-inflammatory drugs, methylcobalamin and other nutritive drugs can be taken as prescribed by the doctor. 3. For gynecological diseases such as pelvic inflammatory disease, oral ibuprofen and other antipyretic drugs, levofloxacin and other antibiotics can be taken as prescribed by the doctor. 4. For low back pain caused by urological diseases such as pyelonephritis, broad-spectrum antibiotics such as levofloxacin can be taken orally as prescribed by the doctor. It is recommended that people with back pain go to a regular hospital in time, to clarify the cause of the disease, under the guidance of the doctor for standardized treatment, do not blindly self-medication, so as not to delay the condition.