When the child is about three months old, the development of feet will be more important, and the baby will like music. If you can hear the sound when you step on it, it will make your child happier. But there will be some small toys and mirrors on the pedal piano, and the baby's eyesight has not developed well. Usually pay more attention, such as strong sunlight on a small mirror, which will stimulate children's eyes and should be avoided as much as possible. There are some small toys to be careful not to swallow. Regular disinfection to prevent bacterial growth. The advantages of playing the piano still outweigh the disadvantages. You can exercise hand-eye coordination, strengthen leg strength training and take protective measures at ordinary times.