The feeling of swelling in the right side of the lower back may exist in the following three situations. I. The right lumbar muscle strain and myofasciitis caused by long-term chronic accumulative injury can be manifested as localized swelling and painful sensation. Second, the lumbar scoliosis deformity or lumbar spine in a long-term incorrect posture, such as the body bent to the left side of the sedentary patients. Due to the long-term tension, spasm and ischemia of the right lumbar muscles, it can also lead to local swelling and painful sensation. Third, it can be seen in the lumbar involved discomfort caused by abdominal organ lesions, such as nephritis, pyelonephritis, kidney stones, ureteral stones and hepatobiliary system diseases on the right side can lead to lumbar distension.