10 months baby stool black has many reasons: First, because the child to eat animal liver and other food, liver food belongs to the high iron food, in the child ate after being absorbed by the oxidation of black stool, that is, the child usually if you eat a high iron content of food will appear this situation; Second, may be the baby to eat the cause of the drug, the baby if the baby is sick, parents to the baby to eat a number of drugs, these drugs will also affect the color of the baby’s stool, the color of the baby will become black; Third, may also be due to the baby on fire, in the baby on fire when the discharge of stool will also become iron into black. These drugs will also affect the color of the baby’s bowel movements, the color of the baby’s bowel movements will also become black; third, it may also be because the baby is on fire, in the baby’s fire when the discharge of the stool will also change iron into black. So parents do not have to worry too much about the baby’s black stool, as long as the observation of the baby’s mental state is not a problem, there are no other signs of illness do not have to worry about the baby’s black stool problem.