1. language development: infancy is a critical period for the development of language ability. Parents can promote their children's language development by communicating with them, telling stories and singing.

2. Training of athletic ability: Proper physical exercise can promote the athletic ability and coordination of infants, such as crawling, tumbling and jumping.

3. Cultivation of social skills: Babies need to communicate with others. Parents can take their children to parent-child activities and play with other children to cultivate their social skills.

4. Improvement of cognitive ability: The cognitive ability of infants and young children is constantly developing. Parents can help their children know the world and learn knowledge through toys and games.

5. Emotional management ability training: Infants need to learn to express emotions and manage emotions, and parents can help their children establish healthy emotional management ability through companionship and appeasement.