Abstract: The influencing factors of the design evaluation of children’s scooter are complex and diverse, and it is difficult to measure the importance of these factors to product design through quantitative methods. Fuzzy Delphi method (FDM) was employed to quantitatively screen product design evaluation index elements, and a hierarchical index model for design of children’s scooter was established. Then, the fuzzy analytic hierarchy process (FAHP) was adopted to calculate the weight of each indicator element, the design plan was comprehensively evaluated, and the overall evaluation score of children’s scooter was obtained. Finally, the suggestions for optimization and improvement were proposed. The combination of FDM and FAHP can systematically design and evaluate products quantitatively, reduce non-objective factors in the design process, make the design more scientific, rational and rigorous, which also provides a quantifiable reference basis for the selection and optimization of children’s product design schemes. 

Key words: industrial design, children’s scooter, fuzzy Delphi method, fuzzy analytic hierarchy process, design evaluation index