From the physiological and psychological point of view, children have a good premise in brain development, attention, cognitive ability and understanding after 4 or 5 years old. In teaching practice, it is also found that older children have stronger acceptance, higher consciousness and faster learning progress, even learning for several years a year than children aged 3 or 4. By the age of 5, children's cortical cells have been roughly differentiated, the central nervous system is more mature, and muscle development is more perfect, which provides good physiological conditions for learning piano. Therefore, it is generally believed that girls can start learning piano at the age of 4-5, and boys can start learning piano at the age of 5-6.