Children’s diarrhea with blood mucus, considering the possibility of milk protein allergy, viral infections, bacterial infections and other causes. 1. Milk protein allergy: due to the child’s gastrointestinal function is relatively weak, coupled with their own sensitive body, too much consumption of food rich in milk protein, it is easy to cause allergic phenomenon leading to diarrhea, sometimes accompanied by sticky stools, blood. 2. Viral infections: most common in autumn diarrhea, mainly because of viruses on the intestinal mucosa caused some damage, resulting in intestinal mucosal damage, causing bleeding, and will cause diarrhea symptoms. 3. Bacterial infections: may be caused by children’s dietary impurity, due to intestinal mucosal irritation, not only will lead to diarrhea, there may be mucus or blood. Children with diarrhea with blood and mucus is recommended to take the child to the hospital in a timely manner, in accordance with the doctor’s instructions for routine stool and other tests, to clarify the cause of the cause of the standardized treatment in accordance with the doctor’s instructions.