It is possible to get diarrhea after eating dragon fruit and then drinking hot milk. This is related to the food, but also may be related to other diseases, such as gastritis, enteritis and so on. Dragon fruit is rich in dietary fiber can promote gastrointestinal peristalsis, some people may have diarrhea symptoms. Milk is rich in calcium ions can stimulate gastrointestinal motility, a few people may have diarrhea symptoms. Milk contains a certain amount of lactose, such as lactose intolerance may also have diarrhea symptoms. If you have diarrhea, it is not necessarily due to food, but may also be related to the existence of diseases, such as chronic gastritis, chronic enteritis, irritable bowel syndrome, digestive tract tumors and other conditions. If you have diarrhea after consuming dragon fruit and hot milk, it is recommended that you seek medical advice.