In general, the examination items of chronic appendicitis include routine blood test, color ultrasound, retrograde colonography and so on. 1. routine blood test: observe whether the white blood cells are elevated. 2. Color ultrasound: to exclude appendiceal tumor, ileal tumor, gynecological tumor and other diseases. 3. Retrograde colonography: it can assist in confirming the diagnosis of chronic appendicitis. The patient should first take laxatives or enemas to discharge the intestinal contents and ensure the intestinal tract is clean, and then retrograde barium or other contrast and fluoroscopic agents are pushed into the rectum. The patient is asked to change positions, which allows the blind area to fill with contrast, and the appendix is observed to see if it shows contrast and to determine if it is chronic appendicitis. In addition, the patient may also need to follow the doctor’s instructions for laparoscopy, which examines all of the abdomen and can clarify the cause of abdominal pain. It is recommended that patients with chronic appendicitis, timely medical treatment, and follow the doctor’s instructions to improve the relevant examination.