The common gynecological diseases include pelvic inflammatory disease, adnexitis and other gynecological inflammatory diseases, as well as uterine fibroids and ovarian cysts, which may also cause pain in the right side of the back; 4. Consider urinary system diseases, including inflammation of the urinary system, stones and other causes, urinary system diseases will be accompanied by changes in urinary symptoms; 5. The vague pain on the right posterior side usually occurs when the appendix is positioned posteriorly.