The next few months are an important period for the baby to form a strong parent-child relationship with his parents. Adults should not leave their babies for a long time, at the same time, they should broaden their contact areas, especially let them enter the "small society of the same age" as soon as possible, and encourage him to contact and play with babies of the same age. Encourage your baby to make friends when you are outdoors. Hug the baby and touch the baby held by other mothers, see or touch other babies, or show the baby's skills in front of others, or see the skills of other babies. Babies and other babies of the same age can also follow each other on the cushioned ground. Crawl and play, or grab and push the ball, or play with the older baby to see if he prefers to play with the older baby. This can lay the foundation for the baby's social skills in the future. However, if the baby scratches other people's faces or grabs other people's toys, it must be stopped. Don't overprotect the newborn's personality. In this way, modern qualities such as courage, self-confidence, openness, friendliness, being good at getting along with others, compassion and competitiveness will take root in the baby's heart, and the baby will grow up healthily and happily in the future society.