1. Language ability: infancy is a critical period for language development. Parents should communicate with their children more, tell stories, sing songs and play games to help them improve their language expression and understanding.

2. Cognitive ability: Babies are an important stage in the development of cognitive ability. Parents should stimulate their children's sensory and brain development through toys, picture books and music.

3. Social ability: Babies are also a critical period for the development of social ability. Parents should take their children to participate in various social activities, such as parent-child activities and kindergartens, to help them learn to communicate and cooperate with others.

4. Emotional management ability: Babies are an important stage of emotional management. Parents should pay attention to their children's emotional needs, give them enough care and support, and help them establish healthy emotional relationships.

5. Sports ability: Babies are a critical period for the development of sports ability. Parents should encourage their children to do more sports, such as climbing, rolling and jumping, to help them develop good physical coordination and balance.