Weak positive fecal occult blood in newborns may be caused by lactose intolerance, enteritis, anal fissure, etc., and need to be targeted to take general treatment, medication and so on. 1. Lactose intolerance: If the newborn is lactose intolerant, it may cause gastrointestinal bleeding, including gastric mucosal bleeding and intestinal mucosal bleeding, lactase can be given to the newborn, if necessary, need to replace the newborn with deeply hydrolyzed milk powder, which can improve the symptoms. 2. enteritis: for example, acute enteritis, can easily lead to intestinal mucosal damage, resulting in fecal occult blood weak positive, need to give newborns to take drugs, for bacterial infections caused by cefixime, cefdinir and other antibacterial drugs can be taken orally, but if the drug allergy is prohibited. Viral infections, may not be special medication. 3. anal fissure: neonatal anal fissure can lead to weak positive fecal occult blood, often because of defecation difficulties, pay attention to the proper feeding of water to newborns, to avoid constipation. Newborns with weak positive fecal occult blood need to go to the hospital in time, with the doctor to take treatment. The above medications should be used in accordance with medical advice.