To cope with the phenomenon of the elderly living alone due to weakened intergenerational support, urban communities begin to focus on building an ecological model of smart home-based for the elderly with family as a unit. Under the background of smart health care, the work aims to construct a technology model of acceptability of health monitoring devices among the elderly living at home based on UTAUT model. A sample of elderly subjects aged 55 to 80 years was recovered through a five-point Likert scale. SPSS 25 was used to test the data reliability and validity, and the structural equation model was adopted to verify the relevant path hypothesis. The study model fits well, in which effort expectancy, social influence, perceived value, and product characteristics have significant effects on behavioral intentions, performance expectancy and perceived risk have no significant effects on behavioral intentions and experience, education, and self-perceived health status have no significant moderating effect in the model. According to the study results, in-depth discussion is carried out to the relevant influencing factors and theoretical guidance suggestions are put forward on how to improve the acceptability of the health monitoring devices by the elderly.