Result: The disease was mainly seen in the working age group 19 - 60 years old; male / female ratio was equal; time from pain to surgery was mostly > 24 hours; most of the patients had fever accounted for 68.2%; some patients had vomiting, nausea, bowel disorders; all patients had clinical symptoms of abdominal pain and reaction, other common symptoms were abdominal distension and peritoneal tenderness; the majority of patients had an increase in neutrophil, accounting for 79.3%; the correct diagnosis rate of appendiceal peritonitis before surgery was 50.4%.