If two-year-olds are smart, they will perform better in the areas of movement, language, and socialization and interests. 1. Movement: If a two-year-old baby is smart, he or she will have better motor skills than children of the same age and can run and jump very well. 2. Language: Language ability can reflect a person’s developmental status. If a 2-year-old baby has better language ability and can express his or her needs more clearly, it means that the baby is smarter. 3. Interests: If the two-year-old baby shows great interest in things around him, full of curiosity, likes all kinds of new things, and is more sensitive to the outside world, it means that the baby is smarter. Parents should pay attention to the child’s growth and development in a timely manner, regular follow-up in the pediatric outpatient clinic, in daily life to the baby to give the correct guidance, education, and actively cultivate the baby’s interests.