The main causes of pain in the right lower abdomen include acute appendicitis, chronic appendicitis, right ureteral stones or the possibility of colon tumors or polyps. Clinically, the main organs in the right lower abdomen include appendix, appendix, colon and right ureter, so further blood tests, abdominal ultrasound and even CT examination are needed to clarify the diagnosis of pain in the right lower abdomen. Various types of acute and chronic appendicitis usually require prompt surgical treatment, and in the case of intestinal polyps or tumors, surgical treatment is also required to obtain a cure. For ureteral stones, smaller stones can be removed with medication, while larger stones require lithotripsy or even surgical extraction.