Eating cold food on diarrhea may be due to colitis, gastrointestinal dysfunction and irritable bowel syndrome and other causes. 1. Colitis: If patients with colitis eat cold food, it may stimulate intestinal peristalsis to accelerate, intestinal mucosa congestion, edema, intestinal secretion of a large amount of fluid, which will cause diarrhea when eating cold food. 2. Gastrointestinal dysfunction: patients eat cold food, enter the gastrointestinal tract may stimulate the gastrointestinal tract mucosa, which may cause diarrhea when eating cold food. 3. Irritable bowel syndrome: Irritable bowel syndrome refers to a variety of causes, gastrointestinal dysfunction and visceral hypersensitivity, often in the eating of cold food will appear diarrhea phenomenon. If the patient appears to eat cold food on the diarrhea, it is recommended to consult a doctor in a timely manner to identify the cause of the targeted treatment.