Abdominal bloating and pain may be caused by improper diet, peptic ulcer, acute gastroenteritis, intestinal obstruction and so on. 1. Improper diet: If you often eat greasy, spicy and stimulating food, it may lead to gastrointestinal dysfunction, causing indigestion, abdominal distension, abdominal pain and other symptoms, and also accompanied by nausea, vomiting and other discomforts. 2. Peptic ulcer: When the patient suffers from peptic ulcer, it may affect the normal digestive function and weaken the digestive function, resulting in abdominal bloating, abdominal pain, acid reflux and other symptoms under the stimulation of gastric acid. 3. Acute gastroenteritis: If you eat unclean food or the abdomen is cold, it will easily lead to gastrointestinal dysfunction and cause acute gastroenteritis, which will cause the gastrointestinal tract to be infected by inflammation, resulting in abdominal distension, abdominal pain and other conditions, and accompanied by vomiting, nausea, diarrhea and other symptoms. 4. Intestinal obstruction: when the patient suffers from intestinal obstruction, it will easily lead to the contents of the intestines can not be discharged out of the body smoothly, so that the food stagnation in the intestines, abdominal pain, abdominal distension and other symptoms, which may also be accompanied by vomiting, defecation and bowel movement stops and so on. Patients with bloating and abdominal pain should go to the hospital in time, clarify the cause of the disease under the guidance of a professional physician, and actively treat the disease.