In general, doll diarrhea with red blood may be caused by the consumption of food factors such as chili peppers, but also may be caused by acute gastroenteritis due to infectious factors. 1. Food factors: spicy stimulation, cold and hard, greasy and rough food, such as fried chicken, spicy hot, ice cream, etc., can cause the child to appear abdominal pain, abdominal distension, nausea, vomiting, diarrhea, with blood in the stool. 2. Infectious factors: Infection of gastrointestinal tract by bacteria, fungi and viruses caused by unclean diet can lead to abdominal pain, diarrhea, nausea, vomiting, loss of appetite and other symptoms. At this time, the gastrointestinal mucosa is congested and edematous, can appear erosion, bleeding and other damage, can cause stool with red blood and other symptoms. Doll diarrhea with red blood may also be lactose intolerance or mango and other food allergies caused, it is recommended to consult a doctor in order to clarify the diagnosis, under the guidance of the doctor for targeted treatment.