It is normal for babies to recognize births. Baby recognition is a normal physiological reaction, is their self-protection instincts. 4 months after the baby, memory storage capacity, can distinguish between relatives and strangers, to strangers will have a sense of fear and insecurity, that is, recognition. After 18 months, babies have more opportunities to contact strangers, will gradually eliminate the fear of strangers, recognition will slowly disappear. If the baby’s reaction to the birth recognition is strong and lasts too long, parents should encourage the child more and let the child explore interesting things. Exercise early and bring your child into contact with other people. Caring more for the child and giving the baby a sense of security can also reduce the phenomenon of baby’s life.