In clinical practice, CT can detect chronic appendicitis if the patient has it, but it is important to note that the diagnosis of chronic appendicitis is usually made in conjunction with the patient’s medical history and physical examination in order to make a comprehensive determination so that the correct conclusion can be reached. Chronic appendicitis usually shows a thick appendix on CT, and there may be a small amount of exudate around the appendix. Patients with chronic appendicitis usually have recurrent right lower abdominal pain that is relatively constant and does not shift. In addition, there may be nausea, vomiting and fever, which must be taken seriously and patients with chronic appendicitis are recommended to undergo surgery as soon as possible, because surgery is the only effective solution for chronic appendicitis. It has been widely used and promoted.