Or for the middle right side pain may have the following several causes: first, intercostal neuralgia, if it is pain in the middle right back side where the intercostal nerve travels, consider it as intercostal neuralgia, to carry out relevant examinations to exclude other diseases to make a diagnosis. Second, herpes zoster, in the early stage of herpes zoster, can appear in the middle of the back right side of the pain, incubation period 1-2 weeks, after the incubation period can appear patches of herpes, to go to the dermatology department for diagnosis and treatment. Third, rib disease, when there is a tumor or metastasis in the ribs, pain at the ribs can occur, and CT and ECT examinations of the ribs should be performed to make a diagnosis. Fourth, lung disease, when there is a tumor or inflammation in the lung, pain in the middle right side of the back can occur, and CT examination of the lung is performed to make a diagnosis.