At 4-6 months old, babies begin to develop memory storage capacity, not only can they distinguish between relatives and strangers, but they also have a sense of fear and insecurity towards strangers, so they will appear to cry and refuse to be hugged as a fearful phenomenon. It is the nature of the baby that every child will have the phenomenon of recognition during the period of 0-3 years old. If the child is still very recognizable after the age of 3, it is necessary to consider the child’s personality factors. Some children show withdrawal and avoidance even when going to kindergarten, which means that the child is not deliberately fussy and refusing, but rather nature. For a child who is very much an outsider, the mother can start with people with whom the child is familiar and let the child get used to interacting with people other than the mother or the caregiver, and then gradually expose the child to an environment where there are more familiar people and fewer strangers, and then expand the child’s range of exposure once he or she is familiar with an environment where a few strangers are present. After getting familiar with the environment with a few strangers, then expand the scope of his contact, so that the child can gradually adapt to interact with strangers and adapt to unfamiliar environments. Baby recognition can reduce the baby’s attachment to the mother. When the baby is 3 months old, the mother can play hide and seek with the baby. For little babies: what is not in sight is not there. At that time, you can cover your baby’s face with a silk scarf, then, remove the scarf from your baby’s face and say to your baby, “Cat.” Or cover your face with a silk scarf and then remove it, and the baby will usually observe with eyes wide open. This gives your baby an initial understanding that what you can’t see is not not there anymore, but temporarily invisible. When your baby is eight or nine months old, you can hide far away, such as behind the door and hide in other rooms, so that your baby can adapt to having a short time apart from you. And gradually build up trust with other caregivers. This way your baby won’t just stick to one person and has the potential to accept more people.