Through the reinterpretation of the circle and the line, the "circle" is taken as the design main body to achieve a balance between "simplicity" and "reduction", and the "bubble circle" representing children's interest is integrated into the mechanical structure of the scooter. Through the tangent fusion of the circle and the straight line, the cute interest and the sense of technology are kneaded into a "cute science and technology" appearance, which increases the interest and enhances the function.