The presence of gas in the intestine can cause symptoms such as abdominal distension and pain, hyperactive bowel sounds, and increased exhaustion. Under normal circumstances, there is a certain amount of gas in the intestine. The presence of a small amount of gas can promote intestinal peristalsis and help excretion of food residues in the intestine. However, when the absorption function of the intestine is impaired, the gas in the intestinal cavity cannot be absorbed, resulting in excessive gas in the intestine and excessive expansion of the intestinal cavity, and some people may also experience abdominal distension and pain as a result. The presence of a large amount of gas in the intestine, the gas will travel through the food residue, and will make a sound of gas passing through water. This sound is mainly gurgling and can even be heard through the naked ear, a phenomenon also known as hyperintestinal sound. Since the intestine cannot absorb the gas completely, the gas will be expelled along with the feces by the peristaltic movement of the intestine, and the body will show an increase in the number of exhausts.