Based on the coupled communication of smart elderly care and traditional Chinese culture, this paper proposes four paths of coupled communication, including in-depth communication, innovative cultural forms of communication, precise communication, and promotion of coupled development. Two systematic index systems have been constructed to disseminate traditional Chinese culture and develop smart culture and pension. The data is standardized using principal component analysis to establish the correlation coefficient matrix. The coordination index between the two subsystems is calculated, and the coordination model of the two is created based on the concepts of coordination coefficient and coefficient of variation. The subject area, Province S, is in the third stage of the coupled coordinated development during 2010-2023, with traditional culture dissemination and smart elderly care services coming to a high level, and is in a good development level during 2016-2023, with a coupled coordination degree of 8 or more. Using the VAR model, the effect of coupling development on the quality of life of elderly individuals is analyzed. Impulse response analysis of LNCCD and LNQOE: after LNCCD receives a positive shock, LNQOE shows a sharp shock effect. At this time, the response value is 0.07021, which plays a large positive effect, and then enters into a smooth development. The traditional Chinese culture dissemination and the wisdom culture of old age are in the stage of coupled development.