Flatulence and diarrhea may be caused by a cold abdomen, eating high-fat foods, intestinal infections, etc. 1. Cold abdomen: When the abdomen is stimulated by cold, it may cause gastrointestinal dyskinesia, affecting the digestion and absorption of food, resulting in bloating and diarrhea. 2. Eating high-fat food: It takes a long time for fat to be broken down and metabolized in the human body. If the fat content in the food is high, there will be indigestion, which will lead to bloating and diarrhea. 3. Intestinal infection: when the intestine is infected by bacteria, viruses and other pathogenic microorganisms, on the one hand, it may cause intestinal peristalsis to slow down, resulting in flatulence. On the other hand, the inflammatory cells in the body may release inflammatory mediators, under the action of inflammatory mediators, intestinal absorption function may be weakened, while there may also be a large amount of liquid infiltration into the intestinal tract, which may also appear in the case of flatulence and diarrhea. When the situation of flatulence and diarrhea occurs, you should consult a doctor in a timely manner, under the guidance of the doctor to improve the stool routine, blood biochemistry tests, stool culture and other tests, to clarify the cause of the disease, and active treatment.