The work aims to solve the problems of unclear user demands and objectives and vague product value attributes in product development. KANO model and AHP (Analytic Hierarchy Process, AHP) method were integrated into the iNPD (integrated New Product Development) program to conduct empirical research on innovative design of smart speaker products. Firstly, product opportunities were found through SET factor analysis, and the basic storyline was drawn. Secondly, the demand attributes of smart speaker were divided based on the KANO model, and the AHP method was used to solve the importance of sub-demands under each attribute through the steps of hierarchical model construction and weight calculation. Finally, according to the analysis of user demands, the smart speaker was conceived and design scheme was proposed. The innovative design method integrated into iNPD based on the KANO model and the AHP method realizes the user's participation in the design and decision-making in the whole process of smart speaker product development, improves the scientificity and rationality of the development of innovative smart speaker products, and enhances the feasibility and validity of the design scheme, thus providing a reference path for innovative design of similar products.