The umbilicus has a half spherical mass that is soft, and a giant umbilical hernia may dangle downward, and if the hernia contents are intestinal tubes, intestinal peristalsis may be seen. The umbilicus is located right in the middle of the abdominal wall and is the latest part of the abdominal wall to close during embryonic development. The lack of fatty tissue in the umbilicus makes the skin, fascia and peritoneum of the outermost layer of the abdominal wall directly connected together, making it the weakest part of the entire abdominal wall, and the abdominal contents can easily protrude from this part to form an umbilical hernia. So, what tests should be done when a patient shows symptoms of a half spherical lump in the umbilicus? The following is a brief introduction: 1. On physical examination, half of a spherical mass in the umbilicus is soft, and a huge umbilical hernia may dangle downward; if the hernia contents are intestinal tubes, intestinal peristalsis can be seen; the hernia protrudes when standing upright and returns when lying down; there is a sense of coughing impact, and the umbilical defect and round hernia ring can be palpated on retraction. 2.Scientific instrumental examination can be taken as ultrasound examination. First of all, it is necessary to determine whether there is a hernia, as well as what type of hernia and its specific degree, in order to guide how to prevent and treat it. The crying of the child is the most likely to make the hernia attack or aggravate. That is, avoiding elevated abdominal pressure in pediatric patients has a better focus on preventing frequent attacks. 3, gastrointestinal disease ultrasonography, intestinal ultrasonography has been considered an effective diagnostic tool for many intestinal diseases , with adequate intestinal preparation, intestinal ultrasonography can observe the thickness of the intestinal wall of the small intestine, colon and rectum, hierarchical structure, intestinal lumen narrowing or dilatation, and extraintestinal lesions, ultrasound with its real-time dynamic advantage can also observe intestinal peristalsis.