Acute appendicitis is one of the most common acute abdominal diseases in surgery. Due to its urgent onset and rapid progress, timely diagnosis and early treatment are beneficial to the prognosis of patients. The diagnosis of acute appendicitis should be based on the characteristics of different populations, based on clinical symptoms, physical examination, laboratory examination, and imaging methods. Anti-infection treatment should be started as soon as possible in the early stage, and antibiotics should choose effective drug treatment with both anaerobic bacteria and aerobic bacterial infection. Appendectomy is still the most effective treatment for acute appendicitis. In the case of uncomplicated abdominal infection such as simple and non-perforated appendicitis, antibiotic treatment may be chosen, but the development needs to be closely observed. Laparoscopic appendectomy is the first choice, but in pregnancy patients should be cautious. Emergency surgery is required for acute perforated appendicitis and attention should be paid to intraoperative abdominal flushing. Immediate surgical treatment of appendiceal abscess may involve the risk of partial ileectomy. Antibiotic treatment is recommended, with percutaneous abscess puncture and drainage if necessary.