First of all, it is a normal phenomenon for a three-month-old baby to eat his hands. On the contrary, if a three-month-old baby can’t put his two hands together, or can’t put his hand inside his mouth to eat, it’s an abnormal phenomenon. So three months old baby eating hands is not need to be treated. This is not simply not to be treated, because it is good for the child’s own tactile development. In addition, it is also good for his intelligence to improve. Then pay attention is to give the baby to clean his hands, cut his nails short can be. So three months of baby eating hands without special treatment, is a normal phenomenon.