Based on the flow theory, the paper aims to refine the flow experience elements and their demand levels in the smart home fitness scene. First, through qualitative and quantitative research, the family fitness scene and user behavior are analyzed, the family smart fitness flow experience elements are refined, and hypotheses is proposed; then the element points are translated into flow experience scale sentences, and the questionnaire survey is conducted on all fitness users in the form of 5-level Likert scale; finally, the reliability and validity test, correlation analysis and regression analysis of the data collected for the questionnaire are conducted. The family's smart fitness flow experience elements are refined. Based on the nine flow experience elements summarized by the predecessors, 4 elements, namely "shape conforms to aesthetics", "time and space freedom", "continuous supervision and encouragement" and "contextual attributes" are added. The regression equation of the flow experience result elements is constructed, which describes the relationship between precursor elements, process elements and other potential factors of the home smart fitness scene center flow experience and the flow experience result elements, negating the difference in flow experience between men and women and verifying the rationality of other assumptions. Finally, based on the user experience perspective, the flow experience element demand level table is proposed. The family smart fitness flow experience elements are both reasonable and universal, and the flow experience element demand level table has certain theoretical guiding significance for the design of future home smart fitness products.