Objective To study the influencing factors on compliance of late cardiac rehabilitation in elderly patients with myocardial infarction. Methods Totally 178 elderly patients with myocardial infarction admitted to the Qionghai People′s Hospital from June 2019 to June 2021 were enrolled as the study subjects. General information, cardiac rehabilitation information awareness, social support, anxiety, depression and general self-efficacy were investigated. The out-of-hospital early (stage Ⅱ) cardiac rehabilitation compliance was statistically analyzed. The patients were divided into good compliance group (n=19) and poor compliance group (n=159) according to CR compliance in stage Ⅱ. SPSS statistics 19.0 was used for data analysis. According to the data types, independent sample t test and χ² test were used respectively, binary logistic regression model was used to analyze the independent factors affecting the stage Ⅱ cardiac rehabilitation compliance in elderly patients with myocardial infarction. Results Among 178 elderly patients with myocardial infarction, 19 cases (10.67%) had good compliance of stage Ⅱ cardiac rehabilitation. Binary logistic regression analysis showed that awareness of cardiac rehabilitation-related information (OR=0.460,95%CI 0.339-0.625), social support (OR=0.498,95%CI 0.318-0.778) and cardiac self-efficacy (OR=0.294, 95%CI 0.096-0.894) were the protective factors of stage Ⅱcardiac rehabilitation compliance in elderly patients with myocardial infarction, and anxiety (OR=1.455,95%CI 1.299-1.630) was a risk factor of compliance of stage Ⅱ cardiac rehabilitation in elderly patients with myocardial infarction. Conclusion The compliance of stage Ⅱ cardiac rehabilitation in elderly patients with myocardial infarction is generally at a low level. It is suggested to improve the cardiac rehabilitation compliance of patients by enhancing the own disease efficacy, awareness of cardiac rehabilitation-related know-ledge, social support and relieving the anxiety of patients.