The left side of the waist that is the left kidney area, inside the hidden pain to consider may be due to chronic nephritis, lumbar disc herniation, kidney stones, etc., the cause of different medication given will be different. 1. Chronic nephritis: mainly because of bacteria or viruses into the body after the failure to timely cure, resulting in the transformation of chronic nephritis, there will be a lumbar kidney area hidden pain feeling. You can choose prednisolone acetate tablets, betamethasone tablets, diclofenac sodium extended-release capsules to relieve the pain. 2. Herniated lumbar disc: Herniated lumbar disc can compress the nerve root, which can lead to left-sided lumbar pain. It is recommended to choose non-steroidal drugs such as diclofenac sodium, ibuprofen and other drugs, as well as flurbiprofen babu cream and other topical drugs localized topical application, to relieve the symptoms of low back pain. 3. Kidney stones: mainly due to metabolic abnormalities, reproduced in the urine, resulting in precipitation remains in the kidney, thus forming kidney stones will be accompanied by vague pain. It is recommended to choose non-steroidal drugs such as diclofenac to relieve pain, as well as drugs such as eperisone to relieve muscle tension. There are many other causes of pain in the left kidney area, so it is recommended that the patient consult a doctor in time to clarify the cause of the disease and then carry out targeted treatment. The above drugs should be taken under the guidance of a doctor to avoid adverse effects.