Pain in the right lower abdomen of women is usually caused by physiological period, appendix disease, gynecological inflammation or intestinal disease, as follows: 1. Pain caused by the menstrual cycle. Women have the phenomenon of ovulation during the physiological period, and when the follicle ruptures, it produces pain, and if the pain is severe, it is mostly dysmenorrhea; 2. Appendiceal disease. The appendix is located in the right lower abdomen, and common diseases include appendicitis and appendiceal cysts, which can aggravate the symptoms of abdominal pain after cold, exertion or overeating; 3. Pain caused by inflammation. The common ones are adnexitis and pelvic inflammatory disease, chronic inflammatory disease usually vague pain accompanied by a feeling of swelling; acute inflammatory disease pain refuses to press may be accompanied by fever; 4, intestinal diseases. Commonly caused by acute and chronic gastroenteritis, ulcerative colitis, Crohn’s disease, etc., mostly due to inattention to dietary habits or unhygienic diet.