Objective To explore the application effect of home‑based cardiac rehabilitation based on ADOPT mode in elderly patients with coronary heart disease and concomitant frailty. Methods A total of 128 elderly patients with coronary heart disease and concomitant frailty were randomly divided into research group or control group, with 64 cases in each group. The control group received routine home‑based cardiac rehabilitation, based on which the research group received home‑based cardiac rehabilitation base on ADOPT mode. The Tilburg frailty scale score, left ventricular ejection fraction (LVEF), left ventricular end‑systolic diameter (LVESD), left ventricular end‑diastolic diameter (LVEDD), anaerobic threshold (AT), maximum oxygen uptake value (VO2max), 6-minute walking distance (6MWD), and 36-Item Short Form of Health Survey (SF⁃36) score, as well as the incidence rate of major adverse cardiac events (MACE) during intervention were compared between patients of the two groups. Results After intervention, except for social frailty dimension score, scores of the remaining dimensions of Tilburg frailty scale, and total score of Tilburg frailty scale in both groups were lower as compared with before intervention, and the research group exhibited lower scores as above as compared with the control group; in addition, the research group yielded a lower social frailty dimension score of Tilburg frailty scale as compared with before intervention and the control group (P<0.05). After intervention, the research group depicted higher LVEF, longer 6MWD, higher AT, and higher VO2max, whereas lower LVESD and LVEDD, and higher scores of various dimensions of SF‑36 as compared with before intervention and the control group, as well as a lower total incidence rate of MACE as compared with the control group (P<0.05). Conclusion Home‑based cardiac rehabilitation based on ADOPT mode can ameliorate frailty states in elderly patients with coronary heart disease and concomitant frailty, improve cardiopulmonary function and life quality, and decrease the incidence rate of MACE.