Pain on the right side of the belly is an abnormal phenomenon in women and can be caused by a variety of reasons: First, it is considered to be caused by cold or consumption of unclean food that causes pain on the right side of the belly. Second, it may be due to ovarian cysts, corpus luteum cysts or appendicitis, which can also cause stomach pain. Third, when ectopic pregnancy occurs on the right side of a woman’s body, it can also cause pain in her belly. When a woman has pain on the right side of her belly, she should go to the hospital for gynecological ultrasound and blood test for HCG level, and if there is ectopic pregnancy, she should be given conservative medication or surgical treatment in time. If there is appendicitis, ovarian cyst or pelvic inflammatory disease causing pain in the right side of the belly, anti-infective medication should be given actively and if necessary, surgery should be used.