Eight months when the baby hoarse voice, the specific causes are as follows: First, if the indoor air is dry in the fall and winter, parents give the baby drink less water, or eat less fruit, the child will be due to the dryness of the throat, which will appear hoarse phenomenon. Second, if the baby often like to cry, shouting, screaming under the circumstances, can also lead to pediatric vocal cords are affected, which will appear hoarse, parents can calm the baby’s emotions, to avoid letting the baby shouting, screaming, so as to alleviate the symptoms. Third, disease factors, common acute infectious laryngitis, will lead to acute edema of the throat, which will appear hoarse, at this time the baby’s mental state is not very good, there will be obvious breathing difficulties and other symptoms, need to actively take the baby to the hospital for further diagnosis and treatment.