Hidden pain in the left lumbar region should be treated with general therapy, medication, physical therapy and surgery according to the cause, which may be physiological pain caused by excessive exercise, or it may be related to urological diseases, gynecological inflammation, lumbar spine diseases and other pathological causes. 1. Physiological pain: local lactic acid accumulation due to excessive exercise or prolonged sitting can cause physiological pain in the lumbar muscles, which is usually relieved after rest or appropriate activities. 2. Urological diseases: For those caused by urological diseases, such as kidney stones, you can take 654-2 (scopolamine) orally to relieve renal colic and reduce ureteral edema, which is conducive to the discharge of stones; if the conservative treatment is ineffective, you can choose the appropriate surgical method to remove the stones according to the specific circumstances under the guidance of the doctor. 3. Gynecological inflammation: for gynecological inflammation, such as ovaritis, oral levofloxacin and other antibiotics; if there are adhesions around the ovary or ovarian tubal wrapping, consider caesarean section or laparoscopic adhesion release. 4. Lumbar spine disease: For lumbar spine disease, such as lumbar disc herniation, oral ibuprofen and other non-steroidal anti-inflammatory drugs to relieve pain, methylcobalamin and other drugs to nourish the nerves, but also hot compresses, baked electricity and other physical therapy. If conservative treatment is ineffective, surgery is feasible for decompression therapy. There are other reasons for the left lumbar pain, if the persistence of non-relief, it is recommended to timely visit the hospital, improve the relevant examination, clear cause of the targeted treatment in accordance with the doctor’s instructions, do not blindly use their own medication, so as not to cause adverse consequences.