The hardness around the navel is still throbbing. First of all, consider whether there is gastrointestinal dysfunction leading to intestinal distension or constipation. If the beating is rhythmic, consider the pulsation of the abdominal aorta, which is mostly seen in patients who are relatively thin. Secondly, if this condition is accompanied by vomiting, abdominal pain, and gastrointestinal symptoms such as no bowel movement and exhaustion, consider whether there is any intestinal obstruction. Finally, consider whether there is an occupying lesion in the abdominal cavity, which can occur if a tumor on the greater omentum compresses the abdominal aorta; it is very important and must be ruled out in time to consider abdominal aortic aneurysm, and it is recommended to go to the hospital for timely abdominal CT or abdominal aortic ultrasound examination and hospitalization after diagnosis.