The pain below the navel is mainly due to the following conditions: 1. 2, acute appendicitis, the baby appendicitis signs are not like adults, there is a clear metastatic right lower abdominal pain, most of the performance is not typical, can only show the pain below the navel, check the appendix ultrasound can see the enlarged, edematous appendix, routine blood can see white blood cells and neutrophils The blood test shows an increase in white blood cells and neutrophils, which requires emergency surgery.