There are two ways to examine the appendix: 1) physical examination; 2) ancillary examination. The physical examination is usually done by pressing on the McDonald’s point, which is located in the right lower abdomen, at the junction of the anterior superior iliac spine and the middle and lower 1/3 of the middle line of the stomach, and if there is pressure pain and rebound pain, appendicitis is highly suspected. Ancillary tests are usually done with routine blood tests and abdominal ultrasound. If the blood test reveals significantly elevated white blood cells or neutrophils, and the abdominal ultrasound reveals strong inflammation and edema of the appendix, the diagnosis of acute appendicitis is basically confirmed. If there is no inflammation or edema of the appendix on the abdominal ultrasound, a CT examination of the abdomen can be done, which basically confirms the diagnosis.