There are several organs in the right lower abdomen: first, the appendix. When the appendix is inflamed many people will have pain in the right lower abdomen, and this is when appendicitis can basically be identified by blood tests and ultrasound. However, some appendicitis has right upper abdominal pain a few hours before the onset of the disease, and finally shifts to right lower abdominal pain. Second, the right ureter, the right ureter is in the lower right abdomen, it is a section of the urinary organs connecting the kidneys and the bladder, when there are ureteral stones there are often three narrowing stuck stones in the ureteral area, there is pain caused by ureteral stones, the diagnosis can be confirmed by ultrasound and urine tests. Third, for women there are also uterine adnexa, right ovary, etc., and a part of the colon is also located in the lower right abdomen.