Pain at the site of the antimaculature point, which is located in the left lower abdomen, corresponding to the intersection of the umbilicus and the external and external 1/3 of the anterior superior iliac spine, can be seen in patients with ulcerative colitis, who may have abdominal pain, abdominal distension, and even obvious diarrhea and blood in the stool, and this disease mainly occurs more often in young patients. In addition, tumors of the intestinal tract, which also occur in the sigmoid colon and descending colon, patients may also have localized pressure pain, masses and even unformed and black stools, which can be diagnosed by colonoscopy. The most effective treatment is to choose surgery to remove the tumor.