It is possible to lead parents to participate in their children's courses through bystander learning. Close interaction with children in the course can improve parent-child relationship, promote emotional communication, enhance children's learning motivation, attend classes with children, grow up with children, and witness every moment of children's progress. Cultivating children's artistic cells and hobbies from an early age will have a great impact on their growth and life. Parents can also learn something in the parent-child class to improve their literacy.