Ultrasound is normal, blood routine is normal, urine routine is normal, can not completely exclude the problem of appendicitis. 1. Clinical diagnosis of appendicitis, the most important diagnostic basis for physical examination, to determine whether there is the presence of Mai’s point pressure pain, most patients with appendicitis will appear in the right lower abdominal appendix area pressure pain, manifested as pressure pain, rebound pain and muscle tension. 2. Auxiliary tests, including routine blood tests, urine tests, imaging tests can only be used as an auxiliary diagnosis. Routine blood tests often show an increase in the number of white blood cells and C-reactive protein, but some patients may show normal results. Imaging ultrasound can observe thickening of the appendix and the development of fluid around the appendix, but sometimes this may be difficult to detect because of the presence of gas in the bowel. In contrast, appendicitis urinalysis is often normal. If there is right lower abdominal pain, ultrasound is normal, blood routine is normal, and urine routine is normal, it is also important to be seen under the guidance of a surgical specialist to avoid delays.