According to the baby's age, it is suitable for babies under 4 months to exercise their hearing with rattles and music machines. Toys can be hung in front of the baby, and the baby will reach out and grasp them to cultivate the baby's eye-hand coordination ability. If you are older, you can buy some talking bears and other toys, and play some children's songs and stories so that the baby can listen. Don't watch toy advertisements on TV. /kloc-Try not to let the baby touch the video before 0/year old.