The baby has blood in the stool, mainly due to the following reasons: 1, constipation caused by bleeding, most of this situation is manifested in the surface of the stool with blood, the baby will defecate because of pain accompanied by crying, treatment can be used first open plug laxative. The baby’s diet should be careful, eat more coarse fiber, you can also eat more probiotics to regulate intestinal function. 2, bleeding caused by acute enteritis, this situation is manifested as thin stools, sometimes pus and blood stool. If it is caused by bacterial dysentery, check the stool routine in addition to white blood cells red blood cells, you can also see pus cells, treatment requires antibiotic therapy, such as cefotaxime, ceftriaxone. 3, allergic diseases caused by allergic enteritis, most of this condition usually have a history of allergies, especially to bovine protein allergy. Check the stool routine can see red blood cells, but generally no white blood cells, given to avoid the relevant allergic food symptoms can be significantly relieved.