Abstract: Through the analysis of the elderly mental model, by means of the analytic hierarchy
process (AHP), an elderly user mental model was constructed and a dietary health management
application based on the mental model of elderly users was designed. With the analysis of the
components by AHP, the ranking weights of the factors affecting the mental model of the elderly are
generated: cognitive structure, behavioral guidance, and emotional display. On this theoretical basis,
an elderly oriented diet management application based on the mental model of elderly users was
designed. The diet management process is tailored to meet elderly people’s cognition and form an
effective model of care. Finally, the seed prototype was verified through user testing and expert
testing, and the final prototype design was completed after repeated modifications. The study on the
application of elderly oriented diet management which integrates the mental models of elderly users
can not only provide a good user experience for the elderly, but also provide theoretical basis and
objective measurement data for the design of diet health management application of the elderly user
mental model, helping elderly people adapt to smart kitchens in daily life.

Key words: analytic hierarchy process, mental model, elderly oriented, diet management