Heart failure (HF) is an incurable and complex disease syndrome with sophisticated disease trajectories. The guideline for HF management suggests that treatment should include adequate education to help patients have better self-management ability, and improve their quality of life and prognosis. However, how to provide massive amount of HF patients a continuous, complete and individualized disease care education from hospitalization, post-discharge, to home for months is a difficult problem. This study plans to develop an automated and intelligent education system for HF on the mobile device Line platform. Through this platform, we hope to make the HF education continuous for 3 months from hospital to post-discharge period. We hypothesize that (1) this intervention can improve knowledge, self-care, emotional stress, self-efficacy, quality of life and disease outcomes in patients of HF; (2) the system developed in this study can reduce the hours of nursing work while improve the quality of education and become the best clinical auxiliary education tool.