When patients have pain in the lower right side of the navel, the first thing to consider is acute appendicitis, which may form chronic appendicitis if it occurs repeatedly, and the pain in the lower right abdomen will be induced after exertion or cold, which is mostly vague pain, accompanied by nausea, vomiting and fever in severe cases. Secondly, diseases of the ileocecal region and tumors of the ascending colon may also manifest in the early stage as vague pain in the right lower abdomen, accompanied by blood in the stool or black stool, and symptoms such as weight loss and loss of appetite. In female patients, the vague pain in the right lower abdomen may also be caused by pelvic inflammatory disease and adnexitis. In addition to this, urinary tract infections and stones are also more likely to cause vague pain in the lower right abdomen. Therefore, when a patient has hidden pain in the right lower abdomen of the navel, he or she should go to the hospital for gynecological ultrasound and abdominal ultrasound in time to clarify the specific cause and then carry out symptomatic treatment.