The causes of stomach pain and bloating are disease factors and non-disease factors. 1, disease factors. Because of chronic gastritis, gastric ulcer or duodenal ulcer and other chronic diseases, gastrointestinal peristalsis slowed down, digestive juice secretion is not enough to cause stomach pain, stomach distension, if there is appendicitis, cholecystitis will also reflexively cause stomach pain, stomach distension. 2, non-disease factors. Due to abnormal lifestyle, overeating, eating too greasy, eating food too fast so that chewing is not in place, eating too much stimulating food or depressed, angry can cause intestinal dysfunction, digestive juices secretion is insufficient, the flora change and cause gastric distension, stomach pain. If you eat unhygienic food will also cause germs to produce toxins in the intestines, causing acute diseases such as gastroenteritis. Drinking too little water and eating too few fruits and vegetables can cause constipation, and poor bowel movement can also cause stomach pain and bloating. You must pay attention to the regularity of life, three meals evenly, eat light and easily digestible food, eat less and more meals, do not stay up late, keep a happy mood, pay attention to dietary hygiene, drink more water, prohibit smoking and alcohol, forbid eating cold and stimulating food, and then with some drugs to help digestion, stomach pain, stomach distension will disappear.