Venting small abdominal pain is caused by indigestion, imbalance of intestinal flora, and irritable bowel syndrome. Indigestion not only affects the functioning of the stomach, but also the functioning of the intestines. The food that these people excrete into the intestines will be in a semi-digested state causing irritation and abdominal pain. When the intestines are irritated, a large amount of gas is produced, causing an increase in flatulence. When the intestinal flora imbalance occurs, the bad bacteria will cause some irritation to the intestinal mucosa, inducing abdominal pain. When there is an imbalance of intestinal flora, the function of the intestinal tract will also be impaired, absorbing the gas in the intestinal lumen, and the gas in the intestinal tract will be discharged through the anus along with intestinal peristalsis, resulting in the manifestation of flatulence. Some people may have irritable bowel syndrome, in which the smooth muscle of the intestines will spasm, contract, and peristalsis during the attack of the disease, inducing abdominal pain and an increase in the amount of flatulence.