The causes of right lower abdominal pain without inflammation are intestinal obstruction, tumor in the ileum, ureteral stone and so on. 1. Intestinal obstruction: obstruction of right colon or ileum will also cause pain in right lower abdomen, accompanied with anal stopping of gas discharge, vomiting, etc. It should be timely fasting, gastrointestinal decompression, and in serious cases, it is necessary to perform open surgery or laparoscopic surgery, such as strangulated intestinal obstruction. 2. Ileocecal tumor: such as cecum cancer, appendix cancer, ascending colon cancer, etc., which can also cause right lower abdominal pain, mass on touch, nausea, vomiting, etc., as well as constipation and change of stool shape, and should be treated by surgery as early as possible. 3. Ureteral stone: right ureteral stone can also cause right lower abdominal pain, usually colicky, no inflammation, should be as early as possible extracorporeal shock wave lithotripsy. Right lower abdominal pain without inflammation of more reasons, patients should be timely consultation, early treatment, so as not to delay the condition, affecting the prognosis.