Abdominal distension with a bulging sound in the abdomen may be caused by indigestion, gastric perforation, or intestinal obstruction. 1. Indigestion: If the patient has eaten too much indigestible food, it can lead to indigestion, which in turn leads to abdominal distension, and then percussion examination of the patient can find abdominal drumming. 2. Gastric perforation: gastric perforation can also lead to abdominal distension, palpation can also appear drum sound, in addition, the patient can also appear abdominal pain, fever, chills and other symptoms, perfect examination of the patient can also appear plate-like abdomen, intestinal sounds disappeared, abdominal mobile turbidity positive signs. 3. Intestinal obstruction: patients with intestinal obstruction will also appear abdominal distension, abdominal percussion is drumming symptoms, in addition, the patient will also appear abdominal pain, vomiting, stopping defecation and other symptoms, improve the examination, the patient may appear palpation can be found in the abdominal mass, auscultation of intestinal hyperpronunciation, there is gas over the water and other physical signs. In addition to the above diseases, other factors can also lead to abdominal distension, abdominal drumming symptoms and signs, it is recommended to consult a doctor in time to find out the cause, so as not to delay the condition.