Intelligence development: 1.Color recognition, recognition of different colors (Orange, Blue, Green, Pink, etc.) and shapes; 2. Play the multifunctional piano fitness frame, accompany the baby over 18 months; 3.Promote muscle development. A three-month-old baby can lie down and hit the piano keys and touch the pendant to promote the muscle development of the arms and legs; 4. Hand-eye coordination, six-month-old babies can sit down and play with the hanging bell, which will train the baby's small hand grip and flexibility; 5. Tooth development, hanging bells can be disassembled to play, and babies can also chew on the bells, which will promote baby teeth development; 6.Auditory development. When the baby hits the piano keys, it will emit different musical sounds, which stimulate the baby's hearing.