In the elderly's home care life, "sitting" is one of their most important daily behaviors. This study aims to use AHP, QFD and AD methods to finally realize the innovative design of home-type seats for the elderly. The current situation of the age-appropriate furniture market is analyzed comprehensively and the design gaps are clarified. Field research is used to explore user needs, AHP is used to determine the weight of target user needs, QFD is used to determine the weight of design requirements, and finally AD is used to modify QFD to supplement the design strategy evaluation. By constructing a functional concept matrix of related products, a home-friendly seat that meets the physical and psychological needs of the elderly is designed.The user needs are clarified, the design features of age-adaptable seats are analyzed, and a seat product is designed; with the aid of the actual model of functional seats for the elderly, the reliability and safety of AHP, QFD, and AD methods are verified, which provides a certain reference for the design and research of the seat series products for the elderly and research ideas for the future development of furniture for the elderly.