Pain in the lower right side of the navel includes the following causes: the first cause, the most common clinical cause of acute appendicitis, usually presents with pain in the right lower abdominal appendix area, i.e., pain at the McKay’s point. The second cause, which may be caused by ureteral urinary stones on the right side, such as stones in the second stenosis of the right ureter will appear in the right lower part of the navel, and the pain sometimes radiates to the perineum, and severe patients may have symptoms such as hematuria, urinary frequency and urinary urgency. The third reason is that for women, there may be pelvic and uterine adnexal lesions, such as ovarian cyst torsion and patients with pelvic inflammatory disease, tubal inflammation, etc. can occur in the lower right belly button pain. Therefore, if the pain is not relieved in this location, it is important to go to the hospital in time to find the exact cause of the problem through relevant tests, and to carry out systematic treatment for the cause.