Bloating and constipation are associated with intestinal obstruction, intestinal tumors, indigestion, and intestinal flora imbalance. During an episode of intestinal obstruction, the contents will accumulate in the intestines because the intestinal tract is relatively narrow and therefore the contents are not able to pass through. This leads to over-distension of the intestinal lumen causing a feeling of bloating in the stomach, which can be accompanied by a feeling of abdominal distension and pain, as well as the cessation of bowel movements and flatulence. Intestinal tumors can lead to changes in bowel habits, and patients may experience constipation or diarrhea. When patients with intestinal tumors enter the advanced stage, the spread of cancerous tissues and invasion of tumors will lead to defecation with pus and blood stools. When dyspepsia occurs, the digestive and absorptive functions of the intestinal system will be affected, and the inability to absorb the gas in the intestines will lead to abdominal distension, and repeated dyspepsia will lead to excessive accumulation of food in the intestines and cause constipation. When there is an imbalance of intestinal flora, the function of the intestinal tract will gradually weaken, and the undesirable bacteria will react with the residue in the feces to produce gas, resulting in a feeling of bloating in the stomach. As the intestinal function is affected, the normal peristalsis is not possible, and the passage of feces is also affected, resulting in constipation.