Objective To study the effects of health education and exercise rehabilitation based on Information-Motivation-Behavioral model（IMB） on the level of information

confidence and behavior and cardiac function of elderly patients with coronary artery disease（CAD） after PCI. Methods One hundred and twenty-five elderly patients with coronary heart disease after PCI admitted to our hospital from June 2018 to June 2019 were selected and divided into control group（n=62） and study group（n=63） according to the random number table method. The control group was given resistance training combined with 10

000 steps walking training

and the study group added health education based on IMB model on the basis of the control group. Observation and follow-up for 6 months after the two groups of patients to know the level of faith

cardiac function indicators.Results The scores of health knowledge

health beliefs and health behaviors in the study group were significantly higher than those in the control group（p<0.05）. The Left ventricular end diastolic diameter（LVEDD） and Left ventricular end systolic diameter（LVESD） in the study group were significantly lower than those in the control group（p<0.05）. Left Ventricular Ejection fraction（LVEF） and 6 min walk distance（6-min walk test

6 MWT） were significantly higher than that of the control group（p <0.05）. Conclusions Health education and exercise rehabilitation based on IMB model can significantly improve the level of knowledge

trust and practice of elderly patients with coronary heart disease after PCI

promote physiological remodeling of myocardial structure

improve cardiac function indicators of patients

and can be promoted clinically.