The pain inside the right back mainly considers the following diseases: first, pulmonary artery thromboembolism, such patients may have a high risk of lower extremity deep vein thrombosis such as bed rest, sudden appearance of chest pain symptoms such as right back pain, accompanied by coughing blood, syncope, to check the pulmonary artery CTA for clarification; second, acute cholecystitis, such patients can also manifest as pain inside the right back, accompanied by right upper abdominal pain, some patients also Some patients also have fever, nausea, vomiting and other symptoms, and the examination of hepatobiliary ultrasound can help to make a clear diagnosis. X-ray examination can help to make a clear diagnosis.