The methods of abdominal examination include visualization, palpation, percussion, and listening. First, the shape of the abdomen should be examined, whether it is panglossia or navicular abdomen, and whether there is a stomach shape or intestinal shape. Then palpation is performed, which generally requires the patient to lie flat on the bed with legs flexed so that the abdominal muscles can be completely relaxed, starting from the area where the patient complains of no abdominal pain or no masses, either clockwise or counterclockwise. Finally, the patient should be examined where the pain is most pronounced or where there is a mass, and the site of the pain should be described, as well as the presence of abdominal muscle tension and rebound pain, and if there is a mass, the size, texture, and mobility of the mass should be described. If the patient has a bulging abdomen or fluid in the abdominal cavity, percussion can reveal whether there is a pneumoperitoneum or the location and amount of fluid in the abdominal cavity. Auscultation is mainly to listen to the patient’s intestinal sounds, which are hyperactive if the patient has symptoms of intestinal obstruction and absent if the patient has intestinal paralysis.