Red blood in the stools of newborns can be caused by vitamin K deficiency, intestinal inflammation, allergic enteritis, other conditions, etc. It can be treated according to the specific situation. 1. Lack of vitamin K: when the lack of vitamin K, it is easy to lead to skin and mucous membrane damage bleeding, if the intestinal mucous membrane is broken, it is easy to have red blood in the stool phenomenon. Vitamin K can be used as prescribed by the doctor. 2. Intestinal inflammation: it may be caused by viral infection or bacterial infection, which often leads to congestion and swelling of the intestinal mucosa, and there may be slight bleeding. Antibacterial drugs such as cefixime can be given for bacterial infections. For viral infections, no special medication can be given. 3. Allergic enteritis: mostly seen in cow’s milk powder or goat’s milk powder fed babies, mainly because of the baby’s allergy to protein. It can lead to red blood in the stool, and the baby can be replaced with partially hydrolyzed protein milk powder, deeply hydrolyzed protein milk powder, and amino acid milk powder if necessary. 4. Other conditions: for example, intussusception, intestinal torsion, etc., easily lead to red blood in the stool. Surgical treatment is needed in time. Newborns with red blood in the stool are advised to go to the hospital in time and cooperate with the doctor for detailed examination and treatment. The above medicines should be used according to the doctor’s prescription.