Children with blood in the stool need to be treated according to different causes, including hemorrhoids, infectious diarrhea and milk protein allergy, for different causes can be given general treatment, anti-infective treatment and change milk powder to remove allergens. 1. hemorrhoids: children are relatively rare hemorrhoids, hemorrhoids are usually formed by congestion and swelling of the mucous membrane of the lower rectum, there will be blood, constipation, mild hemorrhoids without pain, need to reduce sedentary time, abstain from spicy food, pay attention to the anus to clean. 2. Infectious diarrhea: infectious diarrhea manifested as abdominal pain, abdominal distension, diarrhea, if the symptoms of infection is heavy, bacterial damage to the intestinal mucosa, can be seen in pus and blood stools, the need to apply ceftriaxone, cefotaxime, azithromycin and other anti-infective treatment. 3. Milk protein allergy: the most common cause of blood in the stool of infants and young children is milk protein allergy, due to the allergy caused by intestinal mucosal vascular edema, weakly increased rupture bleeding. In addition to blood in the stool, the child’s mental state is very good, growth and development stagnation, need to be replaced with amino acid milk powder. Children with bleeding stools need to be observed with or without vomiting, diarrhea, growth stagnation and other symptoms, need to go to the hospital to find out the cause of the disease, so as not to delay treatment.