The pain in the lumbar kidney area, or what we call lumbar back pain, is common in the following cases: 1, the most common is lumbar muscle strain, because after prolonged standing and sitting or heavy physical labor, the lumbar back muscle fascia inflammation, local edema will appear pain, pain is generally based on soreness, swelling pain, and occasionally stabbing pain. This condition is relatively easy to treat, bed rest or hot compresses after the symptoms can be relieved, if necessary, you can take oral non-steroidal anti-inflammatory painkillers. 2, lumbar disc herniation, the early manifestation of lumbar disc herniation is manifested in the lumbar kidney area soreness, the pain level is relatively heavy, can be relieved after rest. There is also a condition of kidney cyst, kidney cyst will also lead to soreness in the lumbar and kidney area, pain will sometimes appear colic, generally need medication, ultrasound can confirm the diagnosis.