The stomach is always bloated recently need to be alert to diseases such as chronic gastroenteritis, intestinal tumors, part of the diet can also cause. The appearance of chronic gastroenteritis is directly related to the abdomen being cold and eating unclean food. It will lead to imbalance of flora and intestinal spasm in the intestinal system. The intestinal system will peristaltically move too fast under the stimulation of inflammation and produce a lot of gas, which will be accompanied by bloating, abdominal pain and diarrhea. Some intestinal tumors are malignant and will cause irritation to the intestinal wall system, many people will have abdominal pain, abdominal distension, and even have mucous blood stools in the stool. Eating onions, beans, and starchy foods often in the diet will also cause a lot of gas to be produced during the digestion of food, thus leading to bloating.