1. Cultivate children's interest in learning music. Interest is the key to guide children to learn knowledge. Cultivating children's interest in art and awakening their musical talent is one of the main teaching tasks of teachers.

2. Exercise children's will quality and promote children's artistic and emotional edification. In children's preschool education, because children have not received systematic knowledge training, they have a stronger desire for knowledge in unknown fields.

3. It can develop children's intelligence and cultivate their interest in learning. A scholar once said: "Music can promote the development of children's intelligence." Therefore, in preschool education or other stages of teaching in western advanced countries, piano courses or other music courses, such as violin, will be offered.

4. Improve the comprehensive ability of preschool teachers. For preschool children, they are young, simple in heart and curious about the unknown. Therefore, in the specific teaching process, teachers generally choose appropriate teaching methods according to children's psychological characteristics to improve children's interest in learning piano.