The appendix is at the end of the cecum, the cecum is the beginning of the colon, and its part is in the right lower abdomen, and the body mark is at the middle and outer 1/3 junction of the umbilicus and the right anterior superior iliac spine, and this point is called the Mai’s point during the physical examination, which is an important body mark of the appendix. Appendix is an immune organ of the human body, appendix such as fecal stone obstruction, can be secondary infection and acute appendicitis, the clinical manifestations of the right lower abdominal pain, can be accompanied by fever, white blood cell elevation, examination can be found in the local pressure pain, rebound pain, ultrasound, abdominal CT can be found in the enlarged appendix, combined with the symptoms, signs and auxiliary examination can be confirmed the diagnosis of appendicitis, for the treatment of this case, including drug treatment and Surgery. After appendectomy, the patient’s life and living will not be significantly affected, but some patients find that the incidence of Crohn’s disease increases after appendectomy.