Aim. This study aimed at investigating the effect of education based on illness perception on self-care behaviors of patients with heart failure.

Background. Heart failure is the final outcome of most cardiovascular diseases, reducing patients’ self-care behaviors as a chronic condition. Changing illness perception of patients with heart failure about the disease is a way to improve the self-care behaviors in these patients.

Method. An experimental design was used to conduct the study. Seventy and six patients with heart failure who admitted to hospitals affiliated to Tehran University of Medical Sciences and were eligible to participate in the study was recruited in 2014 and were randomly divided into intervention and control group. The intervention group attended in three educational sessions and received cell phone follow-up for 8 weeks. The control group received conventional treatment. The self-care behaviors was compared in both groups before, and eight weeks after the intervention. The data were analyzed by SPSS-16 software.

Findings. There was no statistical significant difference between demographic variables of two groups. Self-care behaviors in the intervention group increased after the intervention when compared with the control group (p<0.0001). In the experimental group, the mean score of self-care behaviors after the intervention was significantly higher than mean score before intervention (p<0.0001).

Conclusion. The results showed that education based on illness perception affects self-care behaviors in patients with heart failure. It is suggested as an effective method to promote the self-care behaviors in these patients.