Nine-month-old babies can sit and play with toys and ask for things by themselves. The baby has begun to ask for outdoor activities, and can walk with things and stand for a few seconds. At this time, parents can help the baby stick to his walking activities and play games with the baby.

You can buy some children's songs or tapes of children's songs for your children to listen to every day, buy some pictures of people and animals, attract your baby with some sounds, and cultivate your child's hearing ability. This toy can be tied to the baby's car, so that the baby can learn to pull the rope and make the music box sound, which can exercise the baby's hand-eye coordination, causality and musical ability. Such a big baby often has 1 favorite toys or blankets to take with him as comfort. Experts believe that soothing substances can play a very good role, because they can make babies feel safe in unfamiliar or uneasy environments.

Parents can let their children learn to grasp the rope on the toy and then pull it over, which can exercise their ability to solve problems.