Through the understanding of Chinese mainstream family lifestyle, the paper aims to deeply study the three generations of physiological needs, psychological needs and experience needs, and explore the bathroom products more close to the user's design form. According to the current prosperity of the sanitary ware market, it is an effective attempt to promote the innovation of sanitary ware design to dig and summarize the physical and mental characteristics and demands of different users. Based on this argument, the basic design principles are summarized from the performance of sanitary products in the aspects of safety, independence and simplicity, and improved design based on several principles is proposed. In the mainstream family life form of China, various correlation exploration is carried out from the main practical needs of children, the elderly and the head of the household couple, to explore the lack of the current design of sanitary products, to summarize the scientific design ideas and basic methods, and to try to complete a systematic design scheme. The development of bathroom products in line with the current mainstream family life pattern in China is undoubtedly a beneficial exploration for bathroom products to obtain greater development value, a good support for users to obtain physical and mental pleasure, and is conducive to providing people with more comfortable experience in the future and creating a great satisfaction of multi-level needs.