High ribs on one side and low ribs on the other side may be related to scoliosis, rib fracture, tumor and so on. 1. Scoliosis: Generally, scoliosis is caused by congenital developmental abnormality or long-term bad posture, which will cause deformation of the thorax and lead to the symptom of high ribs on one side and low ribs on the other side. 2. Rib fracture: usually there is a clear history of trauma, rib fracture, usually there is pain, and the fracture line of the rib can be found in the radiograph, which may also cause one side of the rib to be high and the other side of the rib to be low. 3. Tumor: It may also be related to tumor, the affected side may be swollen, and the appearance will be high on one side and low on the other. There are many possible causes of high ribs on one side and low ribs on the other side, so you can go to the hospital for examination in time and then be treated under the guidance of the doctor.