Objective: To investigate the effect of Green nursing model on health promotion behavior and cardiac rehabilitation after coronary stent implantation. Methods: A total of 90 patients with coronary stent implantation in Department of Cardiovascular, Suzhou First People’s Hospital from April to December 2020 were randomly divided into a control group (n=45) and an observation group (n=45) according to the 1:1 random code generated by SPSS 21.0 statistical software. The control group was given routine nursing. The observation group adopted Green nursing mode. The health promotion behavior, self-efficacy, and cardiac rehabilitation were compared after the intervention. Results: Compared with the control group, the symptom management self-efficacy and disease common management self-efficacy score of the observation group were higher, and the health promotion behavior score was higher, the distance of walking for 6 minutes was longer, the left ventricular ejection fraction was larger, the left ventricular end systolic diameter and the left ventricular end diastolic diameter were shorter, and the differences were statistically significant (all P<0.05). Conclusion: Green nursing model can promote the healthy behavior of patients with coronary artery implantation, enhance self-efficacy and benefit the recovery of cardiac function.