Taking 3-6-year-old preschool children as the target users, the design mainly focuses on multi-functional innovation to break through the single function of the traditional balance car, combined with the cognitive development characteristics of preschool children, the overall shape is rounded and "Penguin" is the main design element to increase the interest of the balance car. The suspension design of the seat beam breaks the traditional balance car structure with shock absorption function. At the same time, parents can also adjust the seat position to adapt to the height of children of different ages through simple structural changes. The design of the three wheels increases the stability and safety of the balance car to the greatest extent and prevents children from falling down. The hidden drawstring is designed in the penguin's pocket, so that children can easily take it. While cultivating children's storage ability, parents can also drive the balance car through the drawstring to promote parent-child interaction.