Global population aging has drastically increased healthcare spending worldwide, with the greatest portion going to hospital and community health services. Heart failure (HF), as the final form of many cardiovascular diseases resulting from insufficient myocardial pumping. Ineffective self-care is consistently identified as the major modifiable risk factor for HF decompensation requiring hospitalization. It refers to an active cognitive process that influence patients' engagement in self-care maintenance, symptom perception and self-care management. However, current studies pay much focus on interventions such as motivational interviewing and behavioural activation to enhance the HF-related self-care and health outcomes which only produces short-term benefits. In fact, the lack of a sustainable effect from the self-care supportive interventions might be related the use of patient-centric design in these studies, which totally ignores the fact that HF management takes place in a dyadic context. To advance, active strategies were adopted to mobilize collaborative effort of the dyad in actual disease management. This study aims to evaluate the effects and cost-effectiveness of a Dyadic empowerment-based Heart Failure Management Program (De-HF) for self-care, health outcomes, and health service utilization among HF patients who require family support after hospital discharge. The De-HF program is based on the Theory of Dyadic Illness Management to enhance the congruence in illness perception and active dyadic collaboration in managing HF via both face-to-face and online platforms.