Pain below the navel is not necessarily bowel cancer, but may also be caused by intestinal inflammation, intestinal obstruction and pelvic inflammation. 1. Intestinal inflammation: due to the stimulation of intestinal mucosa caused by inflammation, it can cause congestion and edema of intestinal mucosa, thus causing pain below the navel. 2. Intestinal obstruction: Intestinal obstruction due to various reasons can cause localized expansion of the intestinal canal, and cause pain below the navel. 3. Pelvic inflammatory disease: such as endometritis, uterine inflammation, in addition to causing pain below the navel, it will also cause an increase in the lower body secretions and accompanied by a strange odor. The pain below the navel may also be caused by intestinal tumors, parasites, etc. It is not possible to determine whether it is intestinal cancer through a single clinical symptom, and it is recommended to do further colonoscopy and pathological tests to make a clear diagnosis, and once diagnosed, it needs to be treated in time.