Objective To observe the application effect of exercise rehabilitation supervision combined with diet quantita-tive planning in patients with heart failure.Methods A total of 90 patients with heart failure in Pingxiang NO.2 People's Hospital from January 2022 to June 2023 were selected as the research objects.According to the random number table method,they were divided into the experimental group(45 cases)and the control group(45 cases).The control group used the conventional mode of heart failure care,the experimental group on the basis of the addition of exercise rehabilitation su-pervision combined with dietary quantitative planning intervention.Dietary compliance,exercise rehabilitation compliance scores and cardiac function indexes(6-min walking distance and left ventricular ejection fraction)were compared between the two groups.Results Before intervention,there was no significant difference in diet and exercise rehabilitation compli-ance scores between the two groups(P>0.05).The diet and exercise rehabilitation compliance scores of experimental group were higher than those of control group after intervention,and the differences were statistically significant(P<0.05).Before intervention,there was no significant difference in 6-min walking distance and left ventricular ejection fraction between two groups(P>0.05).The 6-min walking distance of the experimental group was longer than that of the control group,and the left ventricular ejection fraction was higher than that of the control group,with statistical significance(P<0.05).Conclu-sion Exercise rehabilitation supervision combined with diet quantitative planning can significantly improve the compliance of healthy diet and exercise rehabilitation in patients with heart failure,and achieve good improvement of cardiac function.