The intelligence standard should be considered from the following five aspects: gross motor, fine motor, adaptability, language and social behavior. 3 months old babies can achieve the following standards: a. Gross motor, when the baby is lying on the bed, the elbow support can lift the head, at least 45 degrees, when holding it upright, the head can be very stable with the sound or the person turning left and right. Second, fine motor, two hands can be put together, bare hands to put the rattle or light toys in the hands, can be retained for about half a minute or so. Third, the ability to adapt, is to take objects in front of the eyes to move, the baby can follow 180 degrees. Fourth, language, should be able to make a giggling sound, can laugh out loud. Fifth, social behavior, is to see people can take the initiative to smile.