8 months smart performance can be analyzed from the motor development, language development, adaptability and so on, the specific analysis is as follows. 1. Motor development: 8-month-old infants at this time can independently use their hands to support the whole body, and can independently and independently sit still. 2. Language development: although infants at this time can not speak, but can repeat the simple syllables issued by adults, such as “babbling” and so on. 3. Adaptability: 8-month-old infants can exchange their favorite toys with both hands, and will reach out for toys they are interested in. Whether the baby is smart has a lot to do with genetics, parents can usually interact with the baby, such as storytelling, singing children’s songs, etc., more conducive to promote the development of the baby’s brain.