Appendicitis can affect the bowel movements of some patients, such as the occurrence of diarrhea and constipation. The main mechanisms may be as follows: 1) inflammation of appendicitis leads to changes in the rhythm of local intestinal peristalsis, producing intestinal spasm and causing changes in bowel function; 2) local inflammation leads to dysbiosis of intestinal flora, resulting in diarrhea and constipation; 3) inflammatory exudation leads to fluid accumulation in the pelvic cavity, producing irritation of the bladder and rectum, causing a feeling of urgency or changes in bowel function. Appendicitis is a common surgical emergency abdomen, a group of diseases with clinical manifestations of metastatic right lower abdominal pain. Patients may have abdominal pain, vomiting, and changes in the nature and frequency of bowel movements. Therefore, in clinical work, it is a normal clinical symptom of appendicitis to find that the patient has a change in defecation.