There are dietary and disease reasons for having diarrhea right after eating. Dietary causes include eating cold, spicy and other stimulating foods; disease causes include irritable bowel syndrome, enteritis, intestinal masses and so on. 1. Dietary causes: mainly seen in the diet structure of the problem, such as eating cold, spicy food. This kind of food can lead to enhanced gastrointestinal peristalsis and diarrhea symptoms. 2. Disease causes: such as irritable bowel syndrome can also have abdominal distension, bowel sounds and other symptoms; such as enteritis can also have diarrhea, fever and other symptoms; such as intestinal masses can also have lethargy, fatigue, blood in the stool and other symptoms. For the case of eating and then pulling, it is recommended to consult a doctor to clarify the specific causes of targeted treatment.