Objective To investigate the effects of exercise treadmill training combined with moderate resistance exercise on cardiac function and exercise endurance in elderly heart failure patients with left ventricular ejection fraction retention. Methods One hundred and twenty-seven elderly heart failure patients with left ventricular ejection fraction retention who visited our hospital from January 2018 to July 2019 were selected as study subjects and divided into control group（n=63） and observation group（n=64） according to the random number table method. The control group was given exercise treadmill training

and the observation group was given resistance exercise training on the basis of the control group. After 3 months

the improvement effect of cardiac function

cardiac function and exercise endurance of patients in the two groups were compared. Results After intervention

the cardiac function grading of New York Heart Disease Assocation（NYHA） in the observation group was better than that in the control group（p <0.05）. The observed group of Left ventricular end systolic diameter（LVSD） and Left ventricular end Diastolic diameter（LVDD） were lower than the control group（p<0.05）

and the Left Ventricular Ejection Fraction（LVEF）. LVEF

6 min walking distance

Peak Power（PP）

and Exercise duration（ED） in the observation group were higher than those in the control group（p <0.05）. Conclusions Exercise treadmill training combined with moderate resistance exercise can effectively improve the exercise endurance of elderly heart failure patients with left ventricular ejection fraction retention by improving their cardiac function grade and cardiac function indicators.